This little jewel is made for the electrical contactor, demolition company or small recycler that deals with a lot of 10, 12, and 14 gauge plastice coated, solid core copper building wire. Easy to use - Just connect it to your drill or drill press and feed the wire in the correct hole. It compacts the wire and splits the insulation off the wire. It has a 3/8" shaft to connect to your drill. Make sure you watch the video!