DIY Supplies: Electrical Type: Combination Turn the adjusting out A to get right exposed length of blade, which meet the cable thickness. Turn the adjusting screws B to get a distant of "V" shape cable holder (The diameter of cable was indicated on the slitter C) or punch D to get a distant, and then insert cable into the cable holder E. User can less force on operation. Rotate the tool by clockwise direction 2-3 . Push the shaft to the left end to get a longitudinal cuts. Pull the cable out or the V-shape cutter to remove the slit insulation. For terminal block: Strip cables from 10-15mm diameter. colour:black Material:plastic size:16x4.5x2cm Package Contents: 1*Wire Cutter Tool Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.