Check the listing for details. NIYIKOW 2 Pack Grip Strength Trainer, Hand Strengthener, Black. Color: Black, Condition: New. Listed at 22.17 USD. NIYIKOW 2 Pack Grip Strength Trainer, Hand Strengthener, Black Product Details Color: Black Material: Plastic, Metal Brand: NIYIKOW Style: Hand Strength,Grip Strength Trainer Item Dimensions LxWxH: 6 x 3.9 x 0.7 inches IMPROVE YOUR GRIP STRENGTH & INJURY REHABILITATION - The NIYIKOW adjustable grip strengthener is excellent for strengthening hands, forearms, wrists and fingers. It’s easy and efficient, and it helps to strengthen your grip, injury rehabilitation, relieve stress, and increase stamina. Ideal for anyone wanting to develop and maintain strong healthy hands. Nice hand strength exercise for those who have Arthritis, Tendonitis, Carpal Tunnel, and those who are recovering from tendon surgery. ADJUSTABLE RESISTANCE & PORTABLE PERSONAL HOME GYM - Adjustable resistance, you can adjust it from 11 lbs (5 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’re women or men, kids or adults, 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.