Jeez, people... this isn't rocket science.

The top link is for an RGB Rebel, but not the endor. It's for LED-tech's special 30mm PCB board.

The bottom link is the holder for the optics we normally use. It's not new... I've used them for a while now (months). It's for a single. If I had to hack optics for the Endor I'd use this one because it has the correct height... so if you needed to put it in an MHS you'd need to put a spacer of sorts to have it not rattle (I use a c-clip).