The disc brake road revolution has arrived. The EA90 SL Disc combines the stout 19.5-millimeter internal tubeless EA90 SL rim with Eastons M1 6-bolt disc hubs that have received an A+ Future-Proof rating by Velonews. Hubs easily converts from out of the box 9×100 and 10×135 quick release to 15×100 & 12×100; parts sold separately. These wheels are light, fast and bombproof. Best of all, they rely on standard Sapim double-butted straight-pull spokes and straight-pull spokes and standard external alloy nipples, so theyre easy to maintain and service.