Watch Back Case Opener Screw Type Cover Remover Opening Tool Mini Play Ball Kit-Color Random Easy to use, simply squeeze, press, then screwing This is a watch repair tool, not a toy ball, only use to open the screw thread back watchcase Squeeze the ball, make friction between the ball and the back case, and then rotate the ball to the case "open" direction This friction ball is a great alternative to the standard watch case opener You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!