Pixel Lens Rear Cap + Camera Body Cap for Canon EOS 7D, 50S, 1DS,6D, 50D,40D,30D, 20D, 10D.etc 1.Rear Lens Cover: To cover the back end of the lens after it has been removed from the camera 2.Camera Body Cap: To cover the camera body when there is no lens attached. 3.Lens cap and fuselage cover Prevent the dust and damage, facilitate storage. 4.To protect the lens isolating from dust ,water, and scratch,extent its life time. 5.Compatible for Canon series only