Monoprice Adjustable Cable Jacket Stripper (103355) Utp/Stp Strips Cuts Tool Sharp Sk-2 Blade For Cutter And Stripper Can Be Replaced For Wire Or Wire And Multi-Conductor Cable From 3.2mm-9mm MAX Irregular Out-Shape Insulation Can Be Put Into The Front "V" And "U" Guide It rotate the tool 1-3 times by index finger for stripping the outer insulations easily