Description Hand Grip Arm Trainer Electroplating Baking Paint Adjustable Wrist Strength Sports Exercise Training Fitness Household Equipment|Power Wrists Product Information Item:Hand Grip Arm Trainer Material:Spring steel Function:Exercise wrist strength Size: 25 * 14 cm How To Use 1. Before training, one hand should hold the handle to balance the wrist force. The other hand should reach up from the underside of the arm ring to make the back of the wrist close to the wrist sleeve.The wrist pressing sleeve can be adjusted up and down according to the size of the individuals hand. 2. The wrist pressing sleeve can be pressed to hold the handle. The wrist pressing sleeve can be started to exercise after it is in the middle of the back of the wrist. 3. The wrist is forced to bend to the pole, after a short stop straight return, when the bent wrist inspiratory, return exhalation.Repeat the exercise many times. Product Display Real Picture About After Sale Service 1. We support after-sales service, if the buyer doesnt receive the goods in time, please contact us at your convenience. We will contact the post office for details of this package and contact you . 2. If this product have any problem or defect when you receive it, please dont worry, just contact us in time. We can give you a better solution and you will be satisfied with after sale service. Thanks