A.
anwered by: canteau
This freehub body will work with SRAM XD 12-speed cassettes, but will not work with the DT Swiss 350 hub. DT Swiss 350 hubs use the DT Swiss Star Ratchet system and compatible drivers/freehub bodies.
http://www.treefortbikes.com/product/333222417710/1452/DT-Swiss-XD-Freehub-Body.html