Description Hand grip strengthener is constructed with selected material that is safe to grip. The nonslip hand grip strengthener is also tear and crack resistant for long-term use. Perfectly sized for grip strength training for both men and women, young, old etc. Features -Color:Assorted Color -Material:Aluminum Alloy -Size:12.50X9.50X1.60cm/4.91X3.73X0.63in -Note:50LB(Silver Color)/150LB(Blue Color) -This hand grip tool is selected material, which is flexible and safe, you could keep it for a long time. -Our hand grip tool owns the strong wear, tear and break resistance ability. -Suitable for tennis player, mountain climber, rocks climber, musician, guitar player, violinist, etc. -This is a creative and generous product, with simple appearance and practical design. -The hand grips exerciser is easy to use, you can just simply hold it firmly with your palm and fingers then release and, repeat this process, exercise at the place you like. This hand grip tool is selected material, which is flexible and safe, you could keep it for a long time. Our hand grip tool owns the strong wear, tear and break resistance ability. Suitable for tennis player, mountain climber, rocks climber, musician, guitar player, violinist, etc. This is a creative and generous product, with simple appearance and practical design. The hand grips exerciser is easy to use, you can just simply hold it firmly with your palm and fingers then release and, repeat this process, exercise at the place you like.