The DT Swiss freewheel bodies available here are these working with the ratchet spur gears corresponding to the 350, 240s, 180cc and the high end DT Swiss wheels. Not for EXP system.
The freewheel body is made out of aluminium. It is compatible with every DT hubs working with the spur gear system. The end cap corresponding to the body is included.
The springs, the ratchets and the spacers are not included. Not for EXP system.