wrist ball with counter * Durable plastic &metal ball core * Silicon strap and ... baseball, bowling, basket-ball,, motocross, mountain climbing.2. Increases strength in fingers, wrists, hands, forearms, biceps, triceps, ligament and shoulders3. ... limits. It can be used at any time and in any place while chatting, watching TV, going outing and ... It is not easy to be broken Wristball with counter -WB386C