OK - follow on question. The one at the local hardware store requires you to thread the wire through a hole based on the wire gauge. The one I saw on TV just grabs the wire automatically regardless of size and snip - it is done. The one on TV would let you remove insulation mid-wire. The one I saw at the hardware store would not because you would be required to thread the entire wire through before snipping. Where do you get the kind I saw on TV?
