Process with high temperature quenching,has high hardness,high wear resistance and strong heat resistance,anti-corrosion and anti-rust,sturdy and durability for long service life. APPLICATION:The wire twisting tool for use with power drill drivers,wire terminals power tool accessories,it can twist and stripe wire simultaneously.Spontaneously peel off the insulating coat of wires before twisting them.To get things done with theleast steps. IMPROVE WORK EFFECT:The wire twisting tool expander suitable for all twisting tools,providing better twisting effect,help increase productivity and prevent sore fingers and cramping hands. SPECIFICATION:Our wire twisting tool is Universal Electrical Cable Quick Colour: blue+green+orange Material: steel Size: 90 x 20mm Package Contents:1 x 3 wire 2.5 square wire twister1 x 3 wire 4.0 square wire twister1 x 5-wire universal 2.5-4.0 square wire twister Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.