Nano-Rats make each side of the wheel do what it should to make skating easier and more fun. An outer edge like you are use to, a lock-on inner edge and center set bearings give you a wheel that will upgrade your ride without changing the balance of your set up. Half way between Nano-Cubics and traditional symmetrical wheels, Nano-Rats provide an easy way to make the Dragon Formula work even better for you. Asymmetrical double radial design Radial or side cut outer edge Lock-in radial inner edge Center set bearings Wider Nano-Rats also cover axle nuts Wider riding surface for stability Not your typical wheel