The Canon EB Rear Lens Dust Cap is a protective cap for EF-M lenses. The cap prevents dust and dirt buildup when the lens is not in use, and also safeguards it against scratches, bumps and other light impact.
Fits on EF-M lenses from Canon
Prevents dust and dirt buildup when the lens is not in use
Safeguards lens against scratches, bumps and other light impact