G-FORCE 70 MM 180 GR 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 looses its bounce, even at low temperatures. Diameter: 70 mm Weight: 180 g *This listing is for one ball.