Aluminium hub for bicycle Rear wheel 18P DBCL BOOST for thru axle 12mm 28 holes, straightpull, Aluminium rotor Shimano light 12speed, matt Dimension: 148mmSpecifications:- Product Type: 180- Field Of Application: MTB- Material: Aluminum- Net Weight [G]: 193.000Brake & Freehub System:- Brake Interface: Disc Center Lock- Free Hub Body: Shim. 12SP Light (ASL12)- Freehub System: Ratchet EXP 36Dimensions:- Axle System: 12 mm Thru axle- Built-In Dimension: 148 mm Boost- Hole Count: 28- Bore Type: Round