Durable construction & ergonomic design - the material of the hand grip strengthener is good-quality abs plastic hand grip finger grip, Adjustable resistance - hand grip strengthener can be adjustable from 22 to 88 lbs (10 to 40 kg). it can satisfy different power levels, from the beginners to the advanced hand strengthener hand gripper, Rear for rehabilitation - hand grip strengthener is great for rehabilitation hand exerciser exercise grip, Useful in hand/ finger/ forearm/ wrist exercise - hand exerciser provides a great aid in hand/ finger/ forearm exercise. It is perfect for different occupational people with diverse aims hand grip strengthener hand grip exerciser, Lightweight - hand exerciser is very lightweight, weighted as 5.27 ounce (150g). it is very convenient and portable to take to home/ office/ fitness center or anywhere finger exerciser grip strengthener, Made of stainless steel and TPR material, covered with soft and comfortable and durable rubber handle, it is not easy to fall off.