Os piasty drążona o długości 108mm.
Pasuje do: HB-2200, HB-3300, HB-4400, HB-5600, HB-6600, HB-M525, HB-M530, HB-M570, HB-M580, HB-MC12, HB-RM40, HB-RM70, HB-T400, HB-T610, WH-5600, WH-6500, WH-6600, WH-6700F, WH-M540, WH-M765, WH-R500, WH-R501, WH-R50130F, WH-R540, WH-R550, WH-R560, WH-R561, WH-R600, WH-R601, WH-RS10, WH-RS11, WH-RS20, WH-RS21, WH-RS30, WH-RS31, WH-RS61, WH-RS80, WH-RS80C50CL