[Durable Construction]: Our h grip strengthener is made of Aluminum material designed with ergonomic aluminium hles.Strong compressing spring the reasonable gripper construction make the whole product me firm. [Metal Grip Strength Trainer]: Great f enhancing h strength and rehabilitation. Improve enhance strength, endurance, dexterity, muscular tone, fine gross mot skills of your hs, , wrist fearms, perfect f people who have Arthritis, Tendonitis, Carpal Tunnel. also suitable f musicians, athletes, golfers, rock climbers tennis players. [Grip Strength Trainer Set]: Pack of 3 , 100lbs, 200lbs 3000lbs. 3 different weights 3 training levels,The 100 lb is doable. The 200 lb is challenging; while the 300 lb is insanely difficult. Got these to strengthen your grip now. [ Ptable]: Easy to fit in your pocket backpack, you can take h gripper with you wherever you go.You can do wkout anytime you want with these h Grip Strengthener. [Perfect Item f Daily Strength Training]: Fearm strength Trainer is great f climbers, weightlifters, athletes all men women, senis, kids looking to improve h strength. You can enjoy exercising during wk leisure. Exercise your h anywhere anytime. col:Silver Material:aluminum Package Contents: 3 x h grips Only the above package content, other products are not included. Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.