What are the discrepancies between the LS/LX and RX furlers?

The LS furlers are fitted with standard non removable drum whereas the LX drum plates can be removed and the tack fitting can rotate. LS and LX furling gears are delivered with round foil sections.

Concerning the RX furlers, they are delivered with elliptical, aerodynamic and light foil sections. The plates are removable for use as head foil and the tack fitting is rotating.