High quality sealed cartridge bearings Eclypse 6-bolt disc brake hubs, made by Novatec D791SB/A front hub features 2 large diameter Japanese bearings and a 15x100mm alloy axle 58mm L/45mm R spoke hole diameter, 62mm flange spacing & 7.2mm flange offset Weight: 154g D792SB/A rear hub features a 12x142mm alloy axle and 4 large diameter Japanese bearings: two in the hub shell & two in the freehub body 58mm L/49mm R spoke hole diameter, 56.4mm flange spacing & 7.8mm flange offset Lightweight 4-pawl Novatec B2-type freehub body, made from 7075 alloy Freehub compatibility: Shimano HG11 Weight: 273g Attributes Axle Type 12mm TA Freehub Body SRAM XD-R Hub Drilling 28H Hub Spacing 142mm Hub Spoke Type J-bend Hub Weight 272g Position Rear Primary Color Black Rotor Mount Center Lock Skewers Included No