I am going through my "junk" and came across one of these. I don't know where I picked it up. It's the 1" size and if I put it in my hand and make a fist you can't see it. So I thought I would add it to my model rr tool kit. Maybe get some more for this test. Klick on the link to "See Kant Twist in Action" link. CLAMP MANUFACTURING CO. :tb-wacky: