I watched a journeyman plumber use one of these when he did some work on our ranch. Looked cool as heck so I bought one. I've been wandering around the man cave cutting copper tubing just to see how the thing works. It works GREAT! I had doubts the spring would be strong enough to push the cutter against the pipe, or that rotating it would be really tough. It's not. It goes on easily, rotates easily, leaves a beautiful cut edge. It's handy as heck for when you have two parallel pipes and can't get a regular tubing cutter in there. But it also works just great as a pipe cutter when you have plenty of access. I'll now use this thing instead of the kind with the threaded adjustment thing on the cutter wheel. Very happy with this gizmo. Thanks - Lumpy