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. Specification: Product Name: Metal Grip Size: 13.4*10.4cm Specifications: 100lbs Material: Aluminum handle + spring steel Color: silver, blue, red, black Package included: 1 x Fitness Heavy Grip Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement.