Replacement Dbal-D2 IR illuminator cover. Factory cover usually breaks after a few uses. You must obtain two O-rings to attach cover to unit. The O-ring assortment I own isn't labeled with sizes. The ones I used are roughly .5" ID. Recommend printing at 100% infill w/ PETG. No supports needed, print on face.

EDIT* If your print bed is having issues with adhesion on the small parts try downloading the “Supported” version. Once finished just snap away the square bases on each side.