Sundia Magforce Diabolo

https://www.diabolofocus.com/product/magforce-bearing-white The Magforce bearing diabolo has magnets placed inside the hubs and the axles to create a repulsive force. This increases the speed and reduces the friction. A patented diabolo designed with a wide angle opening and offering an optimal weight distribution. The cup material is hard and slippery to insure a low friction with the string.