Voting for tag changes
Here's the item you were looking at:

A 22lr (7.1mm) Bushing for the 7/8'' ID cups, 1.05''OD Solvent Trap Jig with a bore of .39"
This is a 3D printable bushing for the 7/8'' ID cups, 1.05''OD Solvent Trap Jig with a bore of .39". It will all you to drill a proper 22lr port into
...
