About This Hand Gripper - Arm Muscle Builder Crafted With 50 Inch-Force-Lb Torque Increments From 100lbs To 200lbs. Handles Are Knurled And Coated For A Firm And Non-Slip Grip Home, Work, Athlete Support – Great for anyone looking to improve hand strength our grip strengthener is for climbers, weightlifters, Comprehensive fitness athletes, and more Sturdy - Made with top grade, durable aluminum knurled handles and high quality springs for a long-lasting exercise tool Build stronger hands fast – our grip handles were not built for dainty little hands. They were built to toughen you up and that is how finger exercises should be. Trust us, your hands will get used to it and, afterwards,you will be grateful for it Hand grip kit includes: one 100Lbs resistance, one 150Lbs resistance ,one 200Lbs resistance Overview Color : 3 Pcs Material : Aluminum Brand : Xzyppci Style : Hand Strength,Hand Gripper Tension Level : 100lbs, 150lbs, 200lbs