Hub: Koozer 350 ( front 5x100/15x100/15x110/20x110,Rear 5x135/12x142/5x141/12x148mm boost). Boost = front 15x110 = rear 5x141 or 10x141/12x148mm. HG/XD/MS = the hub's cassette body is compatible with Shimano MTB 8-11 speed cassette and Sram PG series 8-12 speed cassette( HG ) / Sram MTB XG series cassette 11&12 speed( XD ) / Shimano MTB micro spline 12 speed cassette( MS ).
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