Product Description Quickly increase hand wrist finger forearm strength with the best hand exerciser. Ideal for rock climbers, bodybuilders, golfers, surfers, tennis players, drummers, guitarists, pianists, massage therapists, baseball players and violin players. Also beneficial for people who have arthritis, tennis elbow, rheumatoid arthritis, and carpal tunnel syndrome. They train your fingers, hand grip and forearm effectively. That leads to better workouts, and you can avoid several injuries. Ergonomically designed to fit small to large hand sizes. Perfect for men, women, seniors and teens. We can choose from various resistance level. There are ones for beginners as well as for advanced users. Built with the best quality materials and enhanced strong spring to endure long-term and frequent use. Typically they are small equipment so you can use them when and wherever you want. Specifications Material: stainless steel+PP+TPE Resistance range: 22-88 Lbs (10-40kg) Size: 15*11*2cm