Rear Axle 12mm Thru x 148mm. Cassette Body Type Shimano HG. MPN: 00.2018.013.007 - SRAM - 900 - Rear Hub. 900 Rear Hub. Hub Drilling 28. Center to Flange, Left 37.25. Center to Flange, Right 23.5. We are out East at 3063 Columbia Ave. - Lancaster PA, 17603 & out West at 3225 Grande Vista Dr. - Newbury Park, CA 91320 & 165 Design Place, #105 - Sparks, NV, 89441.