Premium Quality Made: Hand Grip Strengthener is made of high quality metal and PP materials, featuring high flexibility and durability, strong enough for heavy duty exercise. Ergonomic Grip Design: The powerful gripper is ergonomic and easily use. Non slip texture on the surface ensures the safety of training. Pocket Size: With the compact design, take this grip strength trainer with you and exercise anywhere: at home, workplace, or travel. Hand Training: Hand grip exerciser is great for finger, wrist & forearm training, building up hand strength, increasing grip and the flexibility of fingers. Applicable People: Wrestlers, athletes, musician, muscle builders, exercise trainers, whether they are beginners or professionals, this grip the best choice. Specification: Material: PP and Metal Size Chart: 15cmx11cmx2.2cm/5.91inchx4.33inchx0.87inch Package Includes: 1Hand Grip Strengthener Note: Please allow slightly errors due to manual measurement and different monitors.