Features:Grip strengthener is made to pump up muscles in your wrist, forearm, fingers, and hand for a powerful grip. Use hand grips strengthener to recover from an injury or simply use it to feel real power in your hands. Ergonomic hand gripStrengthening hand and forearm is not exclusive of ergonomics. Meaning, you have to activate the muscles in the right way. To help you do that, we have designed the product to fit snugly in your hands. From its curvatures to its bends, rubber grips with grooves, and each and every design feature is meant to provide the right amount of stress to your musclesStep-wise strengthening made easyOur hand grip can be tweaked to deliver a resistance of 5 kg all the way up to 60 kg. You can increase exerciser’s strength easily by screwing or unscrewing the knob present at the far side of the spring. This helps you to up your game step-wise without overloading your ligaments. Specification: size:5.9*4.7inchWeight:150gPackaging includes:1*Grip strengthener