Description： Origin: Mainland China Type of sports: Strength Training Type: High Elastic Gripping Ball Model Number: Grip Strength Trainer Department Name: Unisex Training Site: Hand Product Size: about 11.5 * 10.5CM/4.5*4.1INCH Material: rubber Colour(optional): black/gray Weight: about 50g Product application: adult hand function rehabilitation training finger strength grip strength, hand muscle strength small exercise fitness Good elasticity, good hand feel, convenient for users to grasp, finger strength training, finger hole anti-falling design Included: 1set x Grip Strength Trainer Notes: 1. Please allow slight chromatic aberration in the photo. 2. Due to manual measurement, the size may deviate.