The FH-MT500 12-speed Micro-Spline rear hub from Shimano offers the well-known reliability and performance with a new, lightweight bearing and axle system. Features - Shimano FH-MT500 12-speed Micro-Spline Center-Lock 135mm Quick Release New smaller spline diameter for 10T top gear Only compatible with Shimano Micro-Spline cassettes! Product features Use: MTB Model: FH-MT500 Gear: 12-speed Cassette mount: Micro-Spline Brake type: Center-Lock Disc P.C.D.: left 61mm / right 61mm Flange diameter: left 69.8mm / right 69.8mm Flange distance: 55.17mm Offset: 6.72mm Hub: Labyrinth and contact seals Type: Quick release 166mm Axle length: 135mm Spoke hole 32h Material Hub: Aluminum Anodized Axle: Aluminum Freehub body: Steel Color black Weight approx. 515g (manufacturer information)