Camera Rear Lens Cap - Canon 54mm

I needed a new rear lens cap for my canon lens. This will fit (what I assume is standard) 54 mm rear lens. I printed it with PLA and it is a nice snug fit.

**UPDATE 11/18:**
- Fits most 54mm rear lens (tested on Canon 24mm 3.8, 50mm 1.8, 18-55mm 4.0-5.6)
- Adjusted the threading to 'tighten' as you screw it on for a better hold
- Added gripped ribbed version of the cap

**Future Versions:**
Version 2 (It's here!): Will have grip ribs around the end like a standard cap.
~~Version 3 (co