Features: Rotate the tool by clockwise direction 2-3 times. Brand Pro'sKit tool assure high quality and safe reliance. V-shape cable holder gives users a good operating experience. Users can push the shaft to the left end to get a longitudinal cuts quickly. Turning the adjusting screw can help users to work with less force on operation. Application (strip dimension): strip cables from 4.5-25mm (0.18"~1.0") diameter. The V-shape cutter adjusting nut get right exposed length of blade, which meet the cable thickness.