☪ Lens Fit for M LM Camera Lens ☪ The purpose of rear lens is to keep dirt, fingerprints, and off your lens after you removed the lens from camera ☪ This rear len is used when storing your lens or after the lens has been removed from your camera ☪ The M rear lens is high This easy to attach rear lens gives sturdy for the rear contacts of M SLR lenses when not in use.