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Small Hand Carry Portable tool box with drawers

Small portable protective case, waterproof and dustproof to keep your belongings safe during trips.

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Description

I.Product Introduction

Model No. 433016# Medium Square Handheld Hard Protective Case is designed for waterproof and shockproof storage of industrial tools and precision instruments across various scenarios. Its external dimensions are 462×355×175mm (18.12”*13.92”*6.84”), internal dimensions 432×298×157mm (17.04”*11.64”*6.12”), and outer carton packing dimensions 475×195×368mm (18.70”*7.68”*14.49”), with a net weight of 2.5KG. The case is integrally injection-molded from thickened modified high-strength PP alloy, featuring a moderately sized square body with an embedded anti-slip hand grip on the front, a red classification nameplate slot in the middle, symmetrical heavy-duty self-locking spring latches on both sides, and an independent pressure balance relief valve built into the front. Equipped with a full-circle annular sealing gasket, it delivers multi-layer protection including IP67 waterproof and dustproof performance, drop resistance, compression resistance, shock resistance and moisture proofing. Customers may choose between wavy shock-absorbing foam on the case lid or an empty bare compartment inside the case, and custom CNC integrally molded EVA liners are available. It can store complete sets of auto repair hardware, multimeters for testing, surveying and mapping instruments, photographic equipment and electronic maintenance parts. Boasting a moderate portable size, it fits on-site maintenance in workshops, in-vehicle storage, outdoor engineering operations and long-distance courier shipping. It addresses common pain points such as rusting of damp industrial tools, dents and collisions of precision equipment during transportation, and compromised measuring accuracy of instruments, serving as a universal protective storage solution for auto repair shops, engineering inspection specialists and photography professionals.

II. Core Selling Points

  1. Full-area IP67 waterproof and dustproof sealing to block erosion from moisture and dust: An integrally formed high-elastic sealing ring at the case opening fits seamlessly against the case body once closed. It withstands outdoor rain, metallic construction dust and humid workshop mist, effectively preventing oxidation and rust of hardware tools, short circuits caused by dampness in electronic testing instruments, and dust contamination and scratches on optical lenses.
  2. Integrally molded three-dimensional thickened anti-collision ribs all around for high drop resistance without deformation: Widened protruding anti-collision ribs are formed integrally on the top surface and all side walls with no spliced gaps. The case resists cracking and denting under free falls from 1.2 meters and heavy loads from multi-layer stacking, fully safeguarding internal tools and precision equipment against construction site knocks and rough courier sorting.
  3. Front-mounted air pressure equalization relief valve for smooth lid opening at high and low altitudes without jamming: The waterproof relief valve automatically balances internal and external air pressure. No negative pressure will form to suck the lid tight during cross-border air freight or under temperature differences on plateaus, eliminating the need for prying hard and enabling effortless lid opening during long-distance cross-regional transportation.
  4. Built-in integrated anti-slip front handle for hassle-free single-person field carrying: The empty case weighs only 2.5KG. The handle features textured anti-slip bumps and multi-point reinforced rivets, avoiding hand soreness even when fully loaded with complete repair tool sets. Its square shape allows stable placement in car trunks, engineering backpacks and workbenches.
  5. Heavy-duty self-locking spring latches with anti-theft lock holes on both sides for dual safety during storage and transport: Symmetric widened and thickened spring latches on the left and right fasten tightly and will not pop open accidentally amid vehicle jolts or hiking transport. Standard padlock holes are reserved on latches for fitting padlocks during long-term workshop storage and logistics delivery, lowering the risk of loss for valuable testing instruments.
  6. Front red nameplate slot for intuitive classification of stacked cases in warehouses: A red transparent label slot on the front accepts custom paper classification tags. Multiple stacked tool cases can be quickly sorted by categories such as repair tools and testing equipment, boosting management efficiency in workshop warehouses and equipment storage rooms.
  7. Optional custom inner liners to secure tools and instruments free of shifting: Two standard base configurations are available: an empty large compartment and wave-shaped shock-absorbing foam on the lid. Custom CNC-milled EVA liners can be tailored to precisely hold wrenches, multimeters and lenses with cutouts shaped to their contours, keeping items fixed without displacement, friction or collision under transport vibration.
  8. Wide-temperature weather-resistant modified material for long-lasting durability across all regions: UV-resistant and cold-resistant modifiers are blended into the raw material, maintaining stable case performance between -30℃ and +80℃. It resists cracking, whitening and deformation after prolonged use in open construction sites in frigid northern winters and sun-exposed outdoor workshops in hot southern areas.

III. Specification Table

Parameter ItemDetailed Values
External Overall Dimensions462×355×175mm(18.12”*13.92”*6.84”)
Internal Usable Dimensions432×298×157mm(17.04”*11.64”*6.12”)
Outer Packing Carton Dimensions475×195×368mm(18.70”*7.68”*14.49”)
Net Weight of Case2.5KG
Main MaterialHigh-toughness Modified PP Engineering Plastic
Protection ClassIP67 dustproof and waterproof
Standard ConfigurationDual-side heavy-duty spring latches, waterproof pressure relief valve, front embedded non-slip carrying handle, annular sealing rubber ring, extended continuous hinge, front red nameplate slot for marking
Optional inner linersEmpty case, wave-shaped cushion foam for case lid, CNC molded positioning EVA

IV. Details Display

1. Front Red Classification Nameplate Slot

An open red transparent label slot is pre-installed on the front of the case, allowing the classification paper strips to be freely cut and replaced. When multiple toolboxes are stacked neatly, stored items inside can be quickly identified, enabling convenient and efficient classified management for workshop warehousing, engineering operation and maintenance.

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2. Bilateral Symmetric Heavy-Duty Self-Locking Spring Latches

The latches are made of widened and thickened virgin engineering plastic and arranged symmetrically for even force distribution, so they will not loosen easily amid bumpy construction site conditions and vehicle vibrations. Standard lock holes are reserved on the latches for installing anti-theft padlocks to enhance the storage safety of valuable instruments.

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3. Integrally Formed Wave-Shock Absorbing Foam for Case Lid

The optional case lid is lined with high-density wave foam. When the case is closed, the foam closely fits the internal tools, lenses and testing gauges. It cushions vibrations and impacts generated during transportation and field carrying, preventing items from being scratched by mutual friction and protecting their edges and corners from collision damage.

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4. Embedded Anti-Slip Reinforced Front Carry Handle

The integrated handle is embedded on the front of the case with uneven anti-slip textures on its surface and reinforced by rivets at multiple points. It resists cracking and deformation even when fully loaded with heavy maintenance tools. Featuring an ergonomic curved grip surface, it prevents soreness and fatigue in hands after prolonged carrying during field operations.

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V. Color Selection and Customization Services

Color Selection

Matte military black is available as standard stock, which is stain-resistant and scratch-proof. It resists the adhesion and visible buildup of workshop oil stains and outdoor dirt. Custom colors including military green, industrial orange and light gray are offered for bulk orders.

Customization Services

  1. Custom Logo Engraving: Laser engraving and silk-screen printing are available on the blank front area of the case for factory brands, auto repair shop names and enterprise equipment serial numbers.
  2. Precision Cut Liner: Integrated CNC-milled EVA slots are produced according to drawings of maintenance hardware, testing instruments and photographic lenses, fitting the contours of all types of tools perfectly.
  3. OEM & ODM Bulk Customization: For large-volume orders, the case color, accessory structure and liner design can be adjusted to meet specialized storage demands across multiple industries such as industrial maintenance, cosmetics, surveying and photography.
  4. Bulk Procurement Cooperation: Tiered wholesale prices are available for bulk purchases by auto repair shops, engineering inspection institutions, photography studios and surveying teams, and official VAT invoices can be issued.

VI. Application Scenarios

Application Scenario 1 Application Scenario 2 Application Scenario 3

  1. Storage for complete hardware tools in auto repair: Store complete sets of sockets, torque wrenches and fault detectors; the case is waterproof and moisture-proof to isolate workshop humidity and prevent oxidation and rust of metal hardware.
  2. Transportation of precision testing instruments for field industrial work: Carry multimeters, thermometers and flaw detection probes; shockproof protection maintains the measuring accuracy of instruments.
  3. Storage for outdoor photography equipment: Separately store and protect mirrorless camera bodies, standard lenses, filters and flashes to resist erosion by wind, sand and rain during outdoor shooting.
  4. Carrying of field engineering surveying and mapping equipment: Store portable rangefinders and geological sampling accessories for field operations, providing full protection on bumpy mountain roads and in rainy weather.
  5. Classified storage for electronic repair accessories: Neatly store circuit boards, precision screwdrivers and welding tools; dustproof and moisture-proof design safeguards tiny electronic components.
  6. Short-distance delivery storage for small laboratory instruments: Transport and store optical components and miniature sensors to reduce component wear caused by dust and moisture.
  7. Long-distance courier shipping of valuable precision equipment: Thickened hard protective cases withstand violent squeezing during sorting and drastically lower the risk of equipment damage in transit.
  8. On-board storage for vehicle repair tools: Neatly store tools in car trunks; no sliding abnormal noises when driving over bumpy roads, saving interior storage space.

VII. Material and Process Description

  1. Main Box Material: High-toughness modified PP engineering plastic blended with impact-resistant, cold-resistant and UV-resistant modifiers. The thickened wall delivers outstanding toughness to prevent cracking. It resists mild engine oil, acid and alkali corrosion, making it suitable for harsh working conditions in workshops and open-air construction sites.
  2. Sealing Gasket: Made of highly elastic natural rubber with lasting resilience and no hardening. It remains intact without cracking after tens of thousands of opening and closing cycles, consistently maintaining the box’s IP67 waterproof and dustproof sealing performance.
  3. Metal Connecting Fittings: All metal hardware including hinges and lock holes undergo electroplating for rust prevention. They resist rust and jamming in humid workshops and high-humidity coastal working environments.
  4. Forming Process: High-pressure integrated injection molding eliminates assembly seams. The box boasts an integral solid structure with no risks of water seepage, cracking or engine oil leakage through spliced joints.
  5. Assembly Process: Latches, pressure relief valves and hinges are all mechanically reinforced and riveted. They stay free of loosening or shifting after frequent long-term opening and closing. The gasket fits tightly into precision grooves and will not fall off.
  6. Liner Processing: EVA foam is CNC integrally cut to precisely fit the contours of tools and equipment. Wave-shaped shock-absorbing foam is integrally bonded to the box lid for stable and long-lasting cushioning and shock absorption.

VIII. Packaging and Delivery

  1. Independent Protective Packaging: Each case is individually packed in a carton and sealed with an extra-thick corrugated outer carton to prevent edge impacts and surface scratches during courier delivery.
  2. Delivery Lead Time: In-stock empty cases will be dispatched within 48 hours. Orders with LOGO engraving, custom molded EVA, foam and pearl cotton liners will be scheduled for production and delivered within 15 working days.
  3. Logistics Solutions: Small retail orders are delivered to door via courier. Bulk group procurement orders can be shipped by dedicated line logistics, with full-truck door-to-door delivery available.
  4. Packing List: Main protective case; optional liners shipped together in the same package.

IX.FAQ

Q1: The net weight of this case is 2.5KG. What is the maximum total weight when fully loaded with tools?

A: The case is designed with a maximum full load capacity of 15KG. Standard complete sets of auto repair tools and testing instruments can be safely stored inside. Do not load heavy castings exceeding 15KG to prevent long-term overload deformation of the handle.

Q2: Can layered partition accessories be installed inside the empty case?

A: No pre-reserved slots for partitions are built inside the case, so plastic layered dividers cannot be fitted. If separate storage zones are required, custom split slotted EVA foam liners are recommended to fix tools in divided compartments.

Q3: Can scratches on the black outer shell of the case be repaired with touch-up paint?

A: The case is made of matte frosted PP material. Fine minor scratches are barely noticeable. Deep scratches can be repaired with a matching plastic touch-up paint pen, while large-area damage cannot be fixed. Avoid heavy scraping with sharp hard objects.

Q4: How to clean and maintain the pressure relief valve clogged with dust?

A: Use a soft brush to wipe off surface dust on the pressure relief valve. Do not flush the interior of the valve directly with water. If heavily clogged, gently unscrew the valve body, wash it, let it dry completely, then reinstall it.

Q5: Will the upper cases crush the lower ones when multiple identical cases are stacked for storage?

A: Reinforced anti-collision ribs on the top of the case evenly distribute pressure. Stacking up to 3 layers statically will not deform the bottom cases. Stacking more than 5 layers is prohibited to prevent frame deformation and seal failure of the bottom cases.

Q6: Can the matching wave foam liner be purchased separately alone?

A: The lid wave foam and integrally molded EVA liners are available for separate purchase without ordering a full case. Contact customer service and provide the case model for an independent quotation.

Q7: Will the latches turn brittle and crack if the case is left on construction sites under sub-zero temperatures for a long time?

A: The case and latches are manufactured from cold-resistant modified PP raw material, which retains toughness at temperatures as low as -30℃ and will not crack under normal opening and closing. Do not forcefully pry the latches in low-temperature environments to avoid breakage caused by cold brittleness stress.