RGBY to complete the filter set for M3C4 flashlights.
Full Set: ET54 DRGBY
Unscrew the bezel ring from the flashlight and screw a filter on in place of the bezel ring.
M3C4 XM-L (Already has an ET54 diffuser with the flashlight.)
M3C4 Triple XM-L (Already has an ET54 diffuser with the flashlight.)
SX25L2T XM-L2 (With the turbo head, it fits ET54 filters instead of ET47 filters.)