18929 For 8mm and 8.5mm spiral core spark plug wire. Quickly and easily change Die Sets with the press of a lever. Die Set Applications Supplied in a durable, plastic molded storage case with carrying handle.
then I tried to crimp a 12 gauge wire using non insulated terminal and it wouldn't crimp down all the way because the jaws were separating and the dies were falling out. After that I tried to crimp small wire around 22 gage or so with the non insulated die and could pull the wire out of the terminal easily. Spent hours trying to make adjustments to no avail. For a few minutes I was really happy with the purchase but maybe I got a defective unit.