Sports Accessories
Grip Strength Tester, Hand Grip Strengthener, 330Lbs/150kg Adjustable, Hand Gripper with 5 Springs, 304 Stainless Steel, No-Slip Handle, Digital Hand Dynamometer for Sports Home Gym
【HAND GRIP STRENGTHENER】: Made of 304 Stainless Steel, Ball bearings on both sides reduce friction when closing while providing the necessary stability of the upper handle to avoid imbalance, and the pulling force on your fingers will be evenly...
https://www.bizrate.co.uk/sportsaccessories/grip-strength-tester-hand-grip-oid40181440578.html