This is a DIY support beam that semi-fastens the clear case drop tube from the Dillon XL650/750 case feeder. Although the part is mentioned in the manuals, Dillon does not market or resell the part with its loaders. Having found a picture of the original, and taking some measurements on the press setup itself, I recreated a substitute.

It fastens to the tube support using a 6mm or 1/4" bolt/nut (through the opening near the rear). It cradles the support tube, and nests the clear drop tube on the font. The front is not fastened, but is captured partially. The original Dillon design uses a metal clip, however I wanted to create a single-piece printed design, so this is what worked for me.

I printed with 1.5mm walls and 25% infill, so the side walls and top are solid.

Anycubic

All-metal Mega

Yes

No

0.2mm

25