G-FORCE 60 MM 140 GR NEW SMALL BOUNCING The best rubber bouncing balls in the world with a 90% bounce ratio. G-FORCE is the perfect choice for all the jugglers that want to practice the discipline of bouncing buying a good quality prop for a low price. It feels great in your hands, cleans up great with soap and water and most of all never loses its bounce, even at low temperatures. This new 60 mm version is specifically designed for big numbers!