This sale is for a really excdellent condition Mamiya RB67 Pro/ProS Front Body Cap, suitable for use with the RB67 Pro and RB67 ProS cameras. It is NOT suitable for the RB67 ProSD or RZ67 models.
This cap keeps dirt out of your camera when the lens has been removed from the camera. It has minimal signs of use. Try finding another one – these are almost impossible to find.