Shimano M475 disc compatible hubs with quick release axles. Rear Hub Shimano suitable for 7/8/9 speed cassettes. Hubs suitable for I.S.O. 6 hole standard discs. 26-inch Mach1 MX double wall rims. Black anodised finish with machined braking surfaces. Compatible with 26-inch tyres from 1.75-inch to 2.3-inch. Spokes: 32 Black with brass nipples. Rim dimensions: 25 mm External width by 17 mm Internal width by 21 mm depth. Drilled for use with Schrader, Woods or Presta inner tube.