These models grip the wire on both sides of the cutting blades. When you squeeze, first the blades cut the insulation, and then the two sides separate, pulling the insulation off the end of the wire. I use one of these to make the hundreds of very specific-length wires that go into the wiring harnesses of the acrylic mechanical models I (used to) sell.
Location: Bunker
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!