KYLIN SPORT Adjustable Hand Grips Hand Exerciser Heavy Finger Strengthener Trainer For Power Training Athletes Musicians and Hand Rehabilitation Increase Finger and Hand Strength Fast, Ideal for Athletes and People that do Rock Climbing, Bodybuilding, Golf, Tennis etc The adjustable hand gripper is ideal for everybody want to develop and train hand, wrist, and forearm strength. You can adjust the level depending on your grip power Adjustable strength: 10-40kg Plastic grip, ergonomic design, anti-slip, safe to use Offers easy adjustment to suit your desired exercise and allows you to increase as your strength develops