Poster printer / plotter 3 inch to 2 inch reel adapter

This is a plug to make a 3 inch core tube fit on a 2 inch core tube compatible printer. Note that one cap fits a 1.25" spindle. HP sells adapters for $30 but I figured I could make one for less. It's a combination of two files that's been strengthened a bit and shortened for faster printing. Worked well in both ABS and PCTG.