Hand Grip Strengthener Hand Gripper Metal Forearm Grips Exerciser Adjustable 3 spring Description: Premium material: Made of high quality aluminum alloy, featuring high flexibility and durability, strong enough for heavy duty exercise. Ergonomic Grip: The powerful gripper is ergonomic and easily use. comfortable grip, good elasticity, and non slip. Adjustable: The spring can be freely adjusted as you want, according to the training strength. Hand Training: Great for finger, wrist & forearm training, building up hand strength, increasing grip and the flexibility of fingers. Application: Perfect for wrestlers, athletes, musician, muscle builders, exercise trainers. Specifications: Material: Aluminum alloy Size Chart: 30cmx22cm/11.81inchx8.66inch Package Includes: 1 Hand Grip Note: Please allow slightly errors due to manual measurement and different monitors.