I've seen these advertised on TV and thought "what a joke" but, my cohort at school bought one and liked it. We played with it for a while in lab...me thinks I'll get one, it would be great for smaller boat wires..he uses his on his Unifight so it also works on bigger boat wires 
He bought his at the Ace hardware store
http://www.coldheat.com/NR/store/index. ... oductID=76

He bought his at the Ace hardware store
http://www.coldheat.com/NR/store/index. ... oductID=76