IMPROVE YOUR GRIP STRENGTH & STRENGTH RECOVERY - The NIYIKOW adjustable grip strengthener is excellent for strengthening hands, forearms, wrists and fingers. Itàeasy and efficient, and it helps to strengthen your grip, injury recovery, relieve stress, and increase stamina. Ideal for anyone wanting to develop and maintain strong healthy hands. | ADJUSTABLE RESISTANCE & PORTABLE PERSONAL HOME GYM - Adjustable resistance, you can adjust it from 22 lbs (10 kg) to 132 lbs (60 kg) according to your need. Can be done at home or in office with just 5-10 minutes per day. Perfect for athletes, musicians, rock climbers, tennis players, etc. | HIGH QUALITY & DURABLE - Our grip strength trainer is made of heavy-duty plastic and reinforced metal alloy materials, unlike our competitors, which will break or even be made of low-quality materials. Durable and safe, it will not damage your hands and fingers, which will bring you an excellent user experience. | FITS ALL HAND SIZES & PORTABLE DESIGN - No matter you¥ beginner or an experienced person, you can start grip training anytime and anywhere. Suitable for all age groups and fits well for all hand sizes. NIYIKOW hand gripper is made of lightweight and high-quality materials so that you can easily put them in your bag, pocket and carry them anywhere. | LIFETIME WARRANTY & USA CUSTOMER SERVICE - If, for any reason, you are not completely satisfied with your hand grip strengthener, simply let us know and we will refund every penny. You don't have to return the product. No questions asked. Our friendly US-based customer service members will always be there to answer any questions you might have. Click the ADD TO CART button now and try our product completely risk free!!