Smooth operator. The revolutionary Fly Magneto Cassette hub features a magnetic engagement system that uses the force of two magnets to allow the ratchet ring to engage. The magnetic field provides an even repelling force which makes the ratchet to work completely straight and reduces friction compared to traditional springs. Here's a quick demo of the Magneto in action from Fly Bikes magician Courage Adams. Learn more about all the Fly Magneto hubs here.