Novatec dropout hub behind casette Specifications: Colour: silver Material: aluminium, steel Shaft type: hollow shaft Bearing: plain bearing Mounting dimension: 135 mm Number of holes: 32 Suitable for cassette: 8/9/10-speed (MTB) Shimano Diameter of the bolt circle: 45 mm Axle length: 145 mm Flange distance: 57 mm Distance nut to left flange: 32.8 mm Distance right flange to nut: 46 mm