Description Unique ergonomic design allows you to exercise the fingers, wrists and forearms while practicing the correct action for playing musical instruments. Hold the Gripper in either hand and place your finger-tips on the tops of the buttons. Push the buttons down independently or all at once. Features Color:Black. Model:FA-10P. Material:Plastic. Weight: 60g . Dynamism: 2.5 to 6 lbs adjustable intensity. Size: 85*70*20mm. Use it to warm up before playing and to strengthen and stretch the fingers; Unique ergonomic design allows you to exercise the fingers, wrists and forearms while practicing the correct action for playing musical instruments; – – Increases finger speed, strength and independence; Practice without your instrument anywhere,anytime compact and ultra-light design means you can carry the gripper in your pocket, bag or instrument case; Hold the Gripper in either hand and place your finger-tips on the tops of the buttons. Push the buttons down independently or all at once.