Features: Increase your grip increase your lifts Excellent for building forearm strength Works great for increasing speed, strength and power in the wrist, hands, fingers and forearms. Excellent recovery & rehabilitation tool for arthritis, carpel tunnel, rheumatoid arthritis, tendinitis, post surgery, tennis elbow, wrist sprains and broken fingers or wrists. Ergonomic & ambidextrous design makes it suitable for men women, seniors, teens and pre-teens, and children, depending on age. Description: Fit for building wrist,forearm strength Fit for climbers, martial artists, athletes and anyone who wants to improve their hand strength By increasing the resistance,it will eventually allow you to build hand strength Specification: Material: Aluminum & iron Color: gold /black/white Size: As shown Package Included: 1 x Fitness Heavy Grip Note: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.