Yeah, it does. The two sks I use it on, one is polyurethane and the other real thick varnish. Remember, mountian bike tubes. If they slick up in use just wipe them with a wet rag. Try not to savage the tube when you cut them: clean one stroke cut. And, like, I use used tubes myself. If you wet them some they go on easy, and if you have some raggy ends towards the front of the rifle that actually improves the grip. English racer tubes work great on alot of pistols,too. Just make sure that the part of the tube that woud be on the outside normally is on the outside for this, too. "One Size Fits All?'