Kalt 55mm Snap In Lens Cap - these high quality, plastic Snap-in Lens Caps allow for quick, easy on/easy off protection. Spring-tab, positive locking action. Have one for each of your interchangeable lenses.
This is the size of a front lens cap. Standard sizes for snap-on lens caps include: 27mm, 28mm, 30mm, 34mm, 37mm, 39mm, 40.5mm, 43mm, 46mm, 49mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm, 82mm and 86mm.