High-Performance Manual Tools Manufacturer Since 2003

BOSI Tools is a manual tools supplier from China, offering a comprehensive range that includes tool storage systems, tool sets, clamping tools, cutting tools, electronic tools, fastening tools, striking tools, wrenches, dressing and finishing tools, measuring tools, and garden tools.

From cold-rolled steel tool carts to chrome vanadium steel bolt cutters, from SK5 folding saws to S2 screwdriver bit sets — BOSI provides a one-stop professional-grade solution for mechanical manufacturing, construction, automotive repair and maintenance, and home repair with its full-line manual tool matrix. Tool requirements vary across different working conditions.

Feel free to contact us for a customized selection solution.

What Are Manual Tools?

Manual tools, also called hand tools, are a general term for tools that use human force as their primary power source, amplifying the operator's strength through mechanical structures such as levers, inclined planes, and screws to perform tasks including clamping, cutting, fastening, striking, measuring, and finishing. Unlike power tools, manual tools do not rely on electrical or pneumatic power sources; they are instantly ready for use, precise and controllable, and highly adaptable to various environments.

The BOSI hand tool system is comprehensive:

Clamping tools include European style wire pliers, water pump pliers, D-type bolt cutters, and more, forged from premium carbon steel or chrome vanadium steel with high-frequency quenched cutting edges for precise shearing.

Cutting tools include adjustable wire cutters, cable cutters, aviation shears, and pipe cutters, providing corresponding cutting solutions for everything from copper and aluminum cables to stainless steel sheets. Fastening tools cover screwdrivers, ratchet screwdrivers, and rivet guns, spanning full scenarios from micro-electronic screws to structural riveting.

Striking tools feature carbon steel forged hammer heads paired with fiberglass handles, balancing striking force with vibration damping.

Wrench tools range from 1/2" ratchet wrenches to open-end/combination wrenches and trident wrenches, with 40Cr alloy steel ensuring reliable torque transmission.

Measuring tools include high-precision levels, tape measures, and distance-measuring wheels, achieving measurements from the millimeter to the hundred-meter level.

Finishing tools and garden tools provide specialized instruments for hole sawing, painting, and sawing.

The tool storage system and tool sets scientifically organize these tools, forming a complete work ecosystem.

Our Hand Tools vs. Other Brands: Why Choose BOSI?

BOSI hand tools are built on the foundation of selecting the appropriate steel grade for each specific application. Through quenching and precision machining, we ensure the core performance of every tool, enabling users to achieve a one-stop, fully equipped setup through complete category coverage and scientific storage solutions.

How to Choose the Right Hand Tools?

Selection should be based on the core work scenario. First determine the primary tool category, then match the workpiece according to specification parameters and material grade. BOSI's extensive specification coverage within each category ensures tool continuity and interface compatibility across multiple tasks in the same scenario.

What Materials Can Be Processed?

BOSI manual tools can process materials ranging from soft non-ferrous metals to high-strength steel strands:

Copper and Aluminum Non-Ferrous Metals

Cable cutters can cut multi-strand copper and aluminum core cables with a cross-sectional area of up to 22 mm²;

Carbon steel precision sprue pliers can cut copper wire up to Φ2.6 mm;

Five-Piece Sample Punch Set and flat chisels are used for punching center marks and flattening copper and aluminum parts.

Carbon Steel and Alloy Steel

Adjustable wire cutters with chrome vanadium steel heat treatment can cut rebar from Φ5 to 16 mm;

European style wire pliers cut iron wire up to Φ2.4 mm;

Aviation shears (chrome vanadium steel) can cut 0.6 mm stainless steel and 1.2 mm iron sheet;

Heavy-duty pipe wrenches (plastic-coated handle) clamp steel pipes with a maximum jaw opening of up to 141 mm.

Wood and Wood-Based Panels

High-Grade Hand Saw and Fine Polishing Folding Saw cut both dry and wet wood;

Woodworking Chisel (Chrome Vanadium Steel) is used for mortising and shaving wood;

Fiberglass Handle Claw Hammer for driving and pulling nails;

Bimetallic Hole Saw drills holes from 16 to 200 mm in diameter.

Plastic and PVC Pipes

Multi-functional large pipe cutters cut PVC pipes up to Φ75 mm;

Measuring tapes and squares for measurement and stock preparation;

Utility knife (SK5 blade) for cutting soft materials.

Concrete and Gypsum Board

Magnetic Plumb Line for transferring vertical reference;

High Precision Level for horizontal calibration;

Economy Hand-Rolled Ink Marker for line marking; gas nail guns can fasten into concrete.

Measuring and Marking

Mechanical Digital Display Distance Gauge measures up to 99,999.9 meters with an accuracy of ±0.5%;

High-precision steel measuring tape achieves Grade 1 accuracy of ±(0.3+0.2L) mm;

Zinc Alloy Combination Square for marking 45°/90°/180° lines.

From soft copper to hard steel, from wood to concrete, BOSI manual tools achieve full hardness coverage for common engineering materials through different category combinations.

Safety Precautions for Use

Material Capacity Verification

Before using cutting and clamping tools, always confirm that the workpiece material and diameter do not exceed the tool's nominal maximum cutting capacity.

It is strictly prohibited to use Aviation shears (chrome vanadium steel) to cut steel wire, use cable cutters to cut steel strands, or use adjustable wrenches as a substitute for a hammer.

Protective Equipment

Wear safety goggles when cutting hard wire or performing striking tasks, as metal fragments may fly off.

Wear cut-resistant gloves when using striking tools, and always cut away from the body when operating a utility knife.

Correct Force Application

Pull a wrench in the direction of the jaw opening, not push it. Use both hands to grip and apply force on cutting and clamping tools, keeping your body positioned away from the cutting edge plane.

Never extend the handle of a wrench by attaching a steel pipe for extra leverage, as this may cause the tool to fracture or damage the bolt.

Storage and Transportation

When the Eight drawer cabinet shaped tool cart is fully loaded, it should be pushed by two people working together; when parked, lock the dual-brake casters.

Do not exceed the rated load capacity of tool cases and bags; inspect shoulder strap stitching for integrity before use.

Store cutting tools with protective covers on the blades to prevent damage from impacts.

Regular Maintenance

After use, wipe metal tools clean of sweat and oil stains and apply anti-rust oil. Apply light lubricating oil to ratchet heads and hinge shafts quarterly.

Avoid dropping measuring tools or impacting their reference surfaces.

Periodically inspect key load-bearing areas (hammer head wedges, rivets, and joints) to ensure they are free from looseness.

Use According to Standards

The entire product line complies with QB/T or GB/T standards. During use, strictly follow the rated parameters specified in the product manual, and refer to the corresponding specifications for scrapping standards.

Replace tools promptly upon the expiration of their service life to avoid operating with compromised equipment.