Shimano Deore HB-M618/ M615/ M590/ M525A Front HubsFeatures:Double contact sealing Super polished bearing races for low friction rollingSpecifications:Defined Color: Black Color: Black Weight: 304 Hub Drilling: 32Flange Diameter, Right: 61Flange Diameter, Left: 61Front Axle: QR x 100mm Hub/Brake Compatibility: 6-Bolt Disc Center to Flange, Right: 33Center to Flange, Left: 22