Adjustable Resistance- Hand Gripper Strengthener The Hand Strengthener features an adjustable resistance range of 22-110 Ibs (10-50kg), allowing you to adjust the resistance to match your own ability and style. increase in value if you gain strength. All of this can be easily done by turning the small black dial Ergonomic Design- Hand Strengthener Non-slip rubber grips well prevent it from accidentally slipping out of your hand when it gets sweaty and wet . Perfect for men, women, old and young people Practical and Necessary- Bodybuilding Hand Clamp It is perfect for improving strength, power and speed of fingers, palms, hands. wrists and forearms, and helps relieve stress.Ideal for athletes,musicians,pianists,climbers,golfers,bodybuilders,tennis players,etc Durable- Gripper Gripper Hand Strengthening Tool Spring Stainless Steel Solid Steel Hinge: Strong stainless steel spring and solid steel hinge lead a perfect hand grip for your daily workout for a long time Premium MaterialHandle is made of soft rubber anti-slip and high quality stainless steel spring, sturdy and durable. Reinforcement of the handle The ergonomic soft handle is comfortable to hold and will not damage your palm. Whether at home, on the go or in the office, our finger cots are the perfect companion. Function: Strengthen your fingers and forearms, strengthen your grip.