Posted: 15.10.2007 at 16.55
i bought one of these for my bf for last christmas, among many other things. Its a gyroscope, basically a little spinning thing inside a ball that you hold onto which revs really high and creates a g-force within your hand. Controlling it while its spinning enhances your forearm and wrist. www.powerballs.com has more information. lookss like a toy but once you use it its like, whoa...