This Hub Comp Rr.wheel is the most expensive of the items that make up this Rear Wheel (xr250re/rf/rg/rh/rj/rk) assembly.
A sample from the products for the Rear Wheel (xr250re/rf/rg/rh/rj/rk) include: Spoke Set B,rr., B/brg Rad N/com, B/brg Rad N/com, Nut,axle,16mm.
In this schematic the "Spoke Set A,rr." is used most often.