JJC L-R5(R) Rear Lens Cap is specially designed for 4/3 Mount lenses. (Olympus, Panasonic, Leica etc.) The Rear Lens Cap can effectively protect your valuable lenses against scratches, moisture, dust and fingerprints when it is not attached to the camera. JJC L-R5(R) replaces Olympus LR-1 Rear Lens Cap.