The Revolution features YoYoJams all new “Solid Spin” high grade aluminum axle system. Machined specifically for YoYoJam this axle is completely unique in construction. It brings the metal rimmed yo-yo together as if it was a completely solid metal body resulting in a very stable yo-yo. This new construction also allows for two bearing sizes to be used as users progress from your first throw to the most complex string tricks. The Revolution ships with a standard bearing installed which allows the yo-yo to be more responsive for beginner to intermediate play. When users are ready to move on to more complex tricks, simply change to the Speed bearing included in the package to move up to an unresponsive yo-yo capable of the most complex string tricks. The Revolution features a tough polycarbonate body with machined aluminum weight rings. It has a comfortable fit in the hand and a smooth, stable spin at all times.