StreetWires 1/0-gauge 3/8" Crimp-on Power Rings®
Crutchfield Customer Review (What's this?)
Worked as suggested. What else can I say. Insert cable and crimp. The heat shrink tube did take a little while to shrink, but I was using a hair dryer to try to make it shrink. I might suggest using a lighter to produce the heat. Just put the flame close to the tube, but not on it.