Premium Quality: Made of high quality material, featuring high flexibility and durability, strong enough for heavy duty exercise. Ergonomic Grip Design: The powerful gripper is ergonomic and easily use. comfortable grip, good elasticity, and non slip. Pocket Size: With a compact and portable design, take this grip strength training with you and exercise anywhere: at home, workplace, or travel. Feature: Free rotary adjusts strength, 10kg-100kg strength range. Intelligent design, automatic counting. Hand Training: Great for finger, wrist & forearm training, building up hand strength, increasing grip, and the flexibility of fingers. Perfect for wrestlers, athletes, musician, muscle builders, and exercise trainers. Specification: Material: PP Size: 16.5cmx9.9cmx3.5cm/6.50inchx3.90inchx1.38inch Package Includes: 1 Adjustable Hand Grip Note: Please allow slightly errors due to manual measurement and different monitors.