Received a ¾ drill bit 12 inches long but shipper didn't have any caps on it's tube. I saw another already on here however, I haven't had the best luck with .3mf. Being brand new to Fusion 360 I made my own. The Cap is modeled to be 2mm thick on the bottom and 1 mm thick on the walls, 22mm Inside diameter, 24mm Outside diameter, and 25mm tall with a small chamfer. After actually printing, my cheap calipers show 21.7mm I.D. but they serve their purpose. I have done a test print in PLA Silk, and printed 2 caps in ASA for actual use. I can Imagine several other needs for them In other filaments as well like TPU. So hopefully this .stl helps someone.
The author marked this model as their own original creation.