For CONTAX YASHICA C/Y Mount Body Rear Cap Cover Replacement -Rear lens cap is to keep dust, dirt,and moisture off your lens after you removed the lens from camera. -The camera body cap is helpful to protect the image sensor and internal camera components from dust, moisture, and other elements. -With them,Letting you better store your lens and camera separately at any time. -Suitable for CONTAX YASHICA C/Y Mount Lens&Cameras.