Doctor Basics Hand Gripper With Adjustable Dial 10 to 40 Kilo Resistance - Soft Non Slip Comfortable & Durable Rubber Grip Hand Exerciser - Premium Grade Stainless Still Spring Soft Non Slip Comfortable & Durable Rubber Gripper Hand Exerciser Premium Grade Stainless Still Spring Adjustable Dial 10 to 40 Kilo Resistance Ergonomically designed Money Back - If you are not happy with the product, you will get full refund. No questions asked