(GD) IRON GRIP EXT 90 Hand Grip (25~90kg) Grip Strength Training Adjustable Load and Grip Width (Japanese)

GD IRON GRIP is the one for you! Adjustable strength from 25kg to 90kg (6 levels - 1st: 25kg, 2nd: 38kg, 3rd: 51kg, 4th: 64kg, 5th: 77kg, 6th: 90kg) 3 levels of grip width adjustment (74-98mm) to perfectly match your hand size Full metal housing provides ultimate robustness! GD IRON GRIP is as sturdy as a tank, thanks to its 4mm thick steel plate, precision knurled aluminum grips, and powerful molded springs. Unlike other adjustable hand grips, GD IRON GRIP uses a powerful compression spring, so there is no risk of spring breakage and it is safe. You don't have to worry about safety, you can just focus on training. You can train according to the size of your hands. You can easily adjust the grip width of the hand grip. Anyone, from small hands to large hands, can train comfortably. There is no need to purchase multiple hand grips. Systematic training is possible with one GD IRON GRIP. From warming up with low intensity to negative training that challenges your own limits, one hand grip can be used for systematic grip strength training. By attaching the extension grip, you can train at a strength weaker than the indicated strength. (Lever principle) When moving on to the next stage, it becomes a little easier to close the hand grip.