IronMind's Captains of Crush hand grippers and IM tag! There are 7 types: Guide, Sport, Trainer, Point Five, No. 1, No. 1.5, No. 2, and the IM tag No. 5! I oil the spring parts with 55-6 once a month, so there is no rust! I have also cleaned the grip parts as much as possible, so there is no noticeable dirt! There are some stains on the Guide hand gripper! There is some slight rust on the spring part of the IM tag! Both are shown in the photos! I used them for about a year, but I took good care of them with love, so I think they are quite clean hand grippers! The strengths are: Guide (approx. 27), Sport (approx. 36), Trainer (approx. 45), No. 0.5 (approx. 54), No. 1 (approx. 63), No. 1.5 (approx. 75), No. 2 (approx. 88).