The Romex fit fine but when I pulled the handle there was a pop and the cable was left unstripped but the Quik Strip exploded into 4 pieces. It can handle the Romex fine in you remove the outer sleeve ...

Use a multi-tool to strip, cut and crimp electrical wires. Stripping the plastic coating off of electrical wires is easy with a gauged wire stripper, but an electrical multi-tool stripper and ...

After you have run the Romex from the fixture to the box that will hold the wall switch, it is time to connect the wires. Strip 5/8" of insulation from either end of each wire.