XDR Freehub Body FH-805, K81010 (used on HG 35 and HG Knot 45 wheels as sold on bikes). Not for aftermarket wheels as these use DT Swiss ratchet hubs.

• Knot 35/45 wheels XDR driver for Sram AXS (not dt swiss rachet hubs)
• Equivalent Shimano freehub is FH-536 Shimano Freehub, KP416