GD Grip, Hand Grip, Hand Gripper Adjustable 28-99lb(13kg-45kg) Grip Strengthener Exerciser Wrist Strength Training Ergonomic design. You can adjust the level depending on your grip power Strong durable spring. Adjustable resistance range: 28-99Lb(13kg-45kg), Adjustable angle : 58 ~ 90mm Easy adjust resistance by turning the knob, Soft hand grips make the product comfortable to use The adjustable hand gripper is ideal for everybody want to develop and train hand, wrist, and forearm strength