Earthwing Superball 65mm Slide-A wheels are the slide wheel of choice for our team at Muirskate.com. The 65mm Slide-A wheels are tested by the Earthwing team before they go to market. With just a bit more urethane than the Superball 62mm Slide-A, these babies will last you a bit longer. These wheels create the smoothest slides downhill and they do resist flat spots quite well. We don't suggest holding Flat Spins or Colemans for very long otherwise you will be doing the Fred Flintstone and Barney Rubble down the rest of the hill. You can count on the Earthwing Slide-A wheels in super fast stand-up slide situations. The are smooth like a babies back side as you wear them in and you will not feel like you are going to get stuck in any technical slide. 360 spins are effortless in a stand-up and Flat Spin laying down. You should try them with 169mm Independents on the Earthwing Jailbird or Drifter. You will not be disappointed. There is no substitute when it comes to slide technology. Earthwing dominates.