KYLIN SPORT Heavy Duty Aluminium Handle Hand Gripper Grips Arm Muscle Builder Wrist Strengthener Silver - 6 Level Use to increase finger, hand and forearm strength and stamina The best grip strength training tool you ever need, Make the fastest gains in grip strength Aluminium Handles & Rust-proof Coated Srping 6 different strengths and 4 different colors, for ALL level users Heavy Grip can be used anytime anywhere and very convenient to take