Use these for your next handbuilt wheels. Pictured is a Shimano spline ($172) but Campy ($186) is also available. At 321g they are lighter and smoooother than Dura-Ace loose ball hubs and come in more drilling options. They roll silky smooth on cartridge bearings, and use the industry standard 3 pawl ratchet. Velocity also makes similar designed mountain bike hubs, track hubs an even lighter road hubset and a 130mm 6 bolt disc Campy splined hub. MLW handbuilds custom wheels with all these hubs.