Feature 1Premium Spring: Grip strength trainer spring using premium stainless steel material, thickened design, not easy to break, durable. 2Anti Slip: Spring grip strength trainer with high elasticity, handle grip mark design, safe and non slip, comfortable grip, wear resistant and non fading. 3Adjustable: This hand grip strengthener is designed with thickened force adjustment button, making it easier for you to control the strength. 4Intelligent Counting: Our hand gripper is equipped with a counting function that records the number of exercisers you have each time. 5Safe And Durable: The forearm grip strengthener with the interface of the ring buckle safe and firm, durable, not easy to damage.Item Type: Grip Strength TrainerMaterial: Spring SteelFunction: Exercise Hand, Finger Strength, Finger FlexibilityStrength: 5-60kg / 11-132lb .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x GripStrengthTrainer