Electrician is with flexible sword circular cutting depth stop belongs to hand tool technical field. Constitute by broach shell, nut, jackscrew, antiskid sheets. There is the same notch broach shell both sides limit bottom, can move crosswise ride shaft -like cut the thing on. The downthehole nut that is equipped with directly over the notch of a broach shell side, built -in jackscrew can be fixed the broach shell on the cutter body. There is antiskid sheets the inside of another side of broach shell, can prevent that the relative cutter body of broach shell from trackslipping. The knifing is set up to broach shell cover on the cutter body, can surely go out cyclic annular gap on being cut the thing shaft -like. The knifing is controllable, can not injure the core. Mainly used cable electric wire is skinned and is made the joint.