Crystal diabolo with ball bearing and aluminium sticks

For more experienced jugglers. Easier to give it a spin and keep it going! Longer lifespan of the string. What is special about a diabolo with a unidirectional bearing? The axle locks in one direction but spins freely in the opposite direction. A fixed axle cannot spin on its own, so when you stop applying speed, the friction of the axle against the string causes the diabolo to lose momentum. With a carrying axle, the cups of the diabolo keep spinning even if the axle doesn't turn, leading to less friction on the string and less loss of speed. So there's less friction on the string and less loss of momentum, allowing for longer play. Example: You can keep the axle stuck in a loop of the string without losing momentum. What do you really need to know? The axle has a black part and a white part. For right-handed users, the black part should be close to you, while for left-handed users, it should be away from you. Technical specifications: - Diabolo with bearings - Diameter: 10.5 cm - Length: 12 cm - Weight: +/- 120 g - Aluminium hub and rubber grip.