The DOYLE™ Ratcheting Modular Stripper/Crimper/Cutter is made for use on CAT3, CAT6, CAT5e, and CAT6A cable using RJ45, RJ11/RJ12, and R22 pass-through connectors. Use this versatile all-in-one tool for stripping, crimping, and cutting outer jackets of paired-conductor cable.