Deore HB-M618/ M615/ M590/ M525A Front Hubs Double contact sealing. Super polished bearing races for low friction rolling. 6-bolt ISO disc mounting surface. Item Specifications: Color: Black, Weight: 304, Hub Drilling: 32, Defined Color: Black, Front Axle: QR x 100mm, Hub/Brake Compatibility: 6-Bolt Disc, Center to Flange, Left: 22, Center to Flange, Right: 33, Flange Diameter, Left: 61, Flange Diameter, Right: 61,