Smart Counting Design --- Our grip trainer has an automatic counting function that helps you focus on your workout and rewards every successful rep. Press the button hard to count automatically. The mechanical counter that works for life without any batteries will record your exerciser's number every time they use it. Gently rotate the button to clear the ones, and lightly press the spin button to clear the tens. Accurate counting is helpful for analyzing exercise effects. HIGH QUALITY & DURABLE ---- The grip trainer is made of heavy-duty plastic and reinforced metal alloy material with reinforced stainless steel tension spring, adjustable swivel nut supports up to 5-60kg, can withstand more than 20 million grips without No deformation, you can exercise with confidence, the most durable grip. High Elastic Handle ---- The hand grip strengthener is made of environmentally friendly TRE material, with good elasticity and non-slip ergonomic handle, the striped design is suitable for grip training, which can be used for longer training. The handle is durable and will not fade. Adjustable Resistance & Portable Personal Home Gym ---- The resistance can be easily adjusted from 11 to 132 lbs (5-60 kg). It only takes 5-10 minutes a day and can be done at home or in the office. Whether you are female or male, child or adult, beginner or experienced, you can start grip strength training anytime, anywhere. Suitable for all ages and for all hand sizes. IMPROVE YOUR GRIP STRENGTH AND INJURY RECOVERY - The adjustable grip strengthener is perfect for strengthening your hands, forearms, wrists, and fingers. It's simple and effective, and it helps with grip strength, injury recovery, stress relief and increased endurance. Perfect for anyone who wants to exercise and maintain strong, healthy hands. Great hand strength exercise for those recovering from arthritis, tendonitis, carpal tunnel and tendon surgery.