Canon Snap-On Lens Front Cap 50mm. This snap-on cap has an inner diameter of 50mm and fits lenses with a 48mm filter thread. It can be used primarily for rangefinder lenses, R lenses, FL lenses, etc. Although it is unused, the package is damaged, so it has been opened. There are no noticeable scratches on the front side, and it is clean. On the back side, there is a small dent on the edge from the package. Immediate purchase only. Thank you.