product description Size: Grip: 11*17*2cm Pointer: 9*7.5*2.2cm Five-finger circle: 7*7*3.8cm Egg Ball Grip: 5.8*4.1cm Concave and convex grip ring: diameter 6.8cm Color: black, blue, orange, green Material: PP+ABS Package Contents: 1 set of gripper jaws (5 pcs) 1. Smart Counting Grip Booster adds counting function, our hand booster can record the number of your workouts every time you use it. Automatic counting at the push of a button. So you can get a better understanding of your training progress and training results by counting. 2. GRIP STRENGTHENER TRAINER KIT - 5-PACK: This kit includes 1 Adjustable Gripper Strengthener, 1 Finger Stretcher, 1 Finger Exerciser, 1 Hand Strengthener Grip Ring, 1 Stress Relief Grab the ball. 3.Easy-Adjustable Resistance can easily adjust the resistance from 10-130lbs as needed. Grippers are suitable for everyone such as athletes, sports, fitness trainers, fitness, musicians and those who want to exercise their hands, wrists and fingers. 4.Suitable for everyone: Its hand grip range is between 5-60kg. Great for big and small hands, seniors and young athletes, musicians, use your hand exercise equipment to quickly see results. 5. High-quality material, risk-free purchase: The hand clip is made of high-quality stainless steel spring, which is durable. The rubber-coated handle The handle is covered with TPR, which is relatively soft and will not hurt your fingers. Unconditional return and exchange if there is a problem, customer service is enthusiastic. "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."