{"product_id":"jelvi-autostart-power-gyro-ball-wrist-trainer-metal-core-hand-strengthener-for-forearm-grip-finger-wrist-exercise-fitness","title":"JELVI AutoStart Power Gyro Ball Wrist Trainer  Metal Core Hand Strengthener for Forearm, Grip, Finger \u0026 Wrist Exercise Fitness","description":"\u003cp\u003eExercise your wrists and hands. The hand enhancement ball is the centrifugal force generated by the interaction between the rotation of the wrist and the internal rotating core, which can maintain the highspeed rotation of the core, promote blood circulation, and increase the fingers, wrist, hand, forearm, biceps, triceps, and ligaments And the strength of the shoulders, restore muscle strength. The operation is very simple, just push the core in the direction of the arrow, which is activated by the internal spring. Please wear a special wristband during exercise to ensure that you will not lose it due to excessive force. Mechanical design, no power supply required. The compact design can be carried anywhere, whether in the office, gym or at home, it can be used as a toy to decompress at any time, and it can also exercise arm muscles. Ideal for strengthening fingers, wrists, and forearm muscles, the Powerball wrist exerciser set is perfect for sports enthusiasts and fitness lovers looking to boost their hand and wrist strength.\u003c\/p\u003e","brand":"JELVI","offers":[{"title":"Default Title","offer_id":50615078682821,"sku":"WBSPTB0GFWPB5BZ","price":21.37,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/3745\/9397\/files\/71IZpYaj2NL.jpg?v=1790962126","url":"https:\/\/onlinesportsmall.com\/products\/jelvi-autostart-power-gyro-ball-wrist-trainer-metal-core-hand-strengthener-for-forearm-grip-finger-wrist-exercise-fitness","provider":"Onlinesportsmall","version":"1.0","type":"link"}