Reliable Manual Cutting Tools Supplier in China

BOSI Tools is a professional manual cutting tools manufacturer from China, offering a product range that includes adjustable wire cutters, carbon steel precision cable cutters, aviation shears (chrome vanadium steel), utility knives (SK5 blade), multi-functional large pipe cutters, PVC pipe cutters (gold), steel stranded cable cutters, and high-end hacksaw frames.

From chrome vanadium steel forged adjustable wire cutters to utility knives fitted with SK5 blades, from Teflon-coated pipe cutters to telescopic steel stranded cable cutters, BOSI provides precise and efficient cutting solutions for electricians, plumbers, sheet metal workers, and cable installation professionals through appropriate material heat treatment and labor-saving structural designs.

We offer selection advice and customized solutions based on actual working conditions. Please feel free to contact us at any time.

How to Choose the Right Cutting Tools?

The selection logic is primarily determined by the material to be cut. Use cable cutters for copper and aluminum cables, Steel stranded cable cutters for steel strands, Adjustable wire cutters for rebar, Aviation shears for thin sheet metal, pipe cutters for pipes, a hacksaw frame for general sawing, and a Utility knife for soft materials.

Before cutting, always verify that the material dimensions fall within the tool's nominal maximum cutting capacity, and never exceed the specified limits.

Working Principle

The fundamental principle of manual cutting tools lies in the combination of stress concentration and material hardness differential.

The material being cut experiences extreme localized compressive stress between the upper and lower cutting edges. When this stress exceeds the shear strength of the material, plastic slippage occurs along the cutting edge plane until fracture. BOSI cutting tools enhance this process at three levels:

Blade material—the cutting edges of Carbon steel precision cable cutters are high-frequency quenched, and the chrome vanadium steel of Adjustable wire cutters undergoes integral heat treatment, making the blade hardness far greater than that of soft copper, rebar, and other materials being cut.

Mechanical structure—the gap between cutting blades on the Adjustable wire cutters can be adjusted via an external bolt on the linkage arm, and the long handles create a large leverage ratio; the seven sizes from 14" to 48" amplify the gripping force by dozens of times at the cutting edges.

Special functions—the telescopic handle of the Steel stranded cable cutters adjusts between 410mm and 580mm, extending to increase leverage for large-section steel strands, and shortening for operation in confined spaces.

The left/straight/right variants of the Aviation shears are distinguished by the offset direction of their cutting edges: left-cut shears are for cutting counterclockwise arcs, straight-cut shears for straight lines, and right-cut shears for clockwise arcs; the induction-hardened edges are hard enough to sever 0.6mm stainless steel.

The PVC pipe cutter employs an SK5 blade with a Teflon coating to reduce cutting resistance; the blade advances by rotating along the pipe wall, applying uniform force for a single-pass, clean cut.

What Materials Can Be Processed?

The BOSI manual cutting tools range covers a complete material spectrum, from soft copper and aluminum to high-strength steel strands:

Copper and Aluminum Cables

Carbon steel precision cable cutters in three sizes, 6"/8"/10", corresponding to multi-strand copper and aluminum core cables of 9mm²/15mm²/22mm² respectively. The high-frequency quenched jaws produce a flat cut without crushing the conductor.

Steel Strands and Steel-Cored Aluminum Strands

The steel-stranded cable cutters, with a telescopic handle, cut steel strands up to 100mm² and steel-cored aluminum strands up to 400mm². They must not be used for cutting copper/aluminum cables or armored cables.

Rebar and Steel Wire

Adjustable wire cutters are available in seven sizes from 14" to 48", with a maximum cutting diameter from 5mm to 16mm. The integrally heat-treated chrome vanadium steel provides a service life 30% longer than that of standard wire cutters.

Stainless Steel Sheet and Iron Sheet

Aviation shears (chrome vanadium steel) come in left-cut, straight-cut, and right-cut models, cutting stainless steel up to 0.6mm and iron sheet up to 1.2mm. The chrome vanadium steel edges are induction hardened.

PVC Pipes

PVC pipe cutter (gold) cuts up to Φ42mm; the multi-functional large pipe cutters with SK5+Teflon blades cut pipe from Φ32mm to Φ75mm, with an adjustable stop collar ensuring a straight cut.

Metal and Plastic Profiles

The high-end hacksaw frame, 12"/300mm with an aluminum alloy body and compatible saw blade, is suitable for metal, PVC, wood, and various other materials.

Cardboard, Leather, Carpet, and Other Soft Materials

The utility knife (SK5 blade) features a fine-tooth rail and double locking for smooth cutting and convenient blade replacement.

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

BOSI cutting tools are built around cutting edges made from chrome vanadium steel and carbon steel quenching processes. Combined with adjustable structural designs and clearly stated cutting capacities, they approach professional-grade standards in cutting accuracy and durability, making them an ideal cost-performance choice for electricians, plumbers, and sheet metal workers.

Safety Precautions for Use

Personal Protective Equipment

Wear safety goggles when cutting metal cables or rebar, as wire ends may spring out upon severing.

Wear cut-resistant gloves when using Aviation shears to cut thin sheet metal, as the cut edges are sharp and can easily injure fingers.

Verifying Capacity Limits

Before use, ensure that the material to be cut does not exceed the tool's nominal maximum cutting capacity.

Never use Steel stranded cable cutters to cut copper/aluminum cables or armored cables, as this will cause the cutting edges to shatter.

Never use Adjustable wire cutters to cut alloy steel or hardened rebar that exceeds the specified diameter.

Operating Posture

Operate Adjustable wire cutters with both hands, standing to the side of the tool to avoid injury in the unlikely event the jaw head fractures.

Select the correct Aviation shears model according to the direction of the cut: left-cut for curves to the left, right-cut for curves to the right, and straight-cut for straight lines.

When cutting with a Utility knife, extend the blade no more than one blade segment, and always cut away from your body.

Tool Maintenance

After cutting, clean residual metal chips from the cutting edges and apply anti-rust oil, keeping the tool dry. A slightly burred edge can be dressed with an oilstone; severely chipped edges require replacement.

For pipe cutter blades, regularly check the Teflon coating for wear; if the coating comes off, cutting resistance increases and the blade should be replaced.

A Utility knife has a built-in quick-change blade system—replace dull blades promptly.

Storage and Warranty

When storing for a long period, apply anti-rust oil to the cutting edges and store in a dry place. The Steel stranded cable cutters carry a 3-month warranty (excluding pawls and ratchet teeth); after cutting, check the pawl engagement for any signs of ratcheting slip.

Keep the hinge bolt of Adjustable wire cutters in an adjustable condition and avoid leaving it in the maximum locked position for extended periods.