The Nikon LC-ER8 Rear Lens Cap protects the rear element of the WC-E75A wide-angle adapter from dust and scratches. This protective cover should be in threaded on when the lens is not in use. The WC-E75A comes with front and rear caps at the time of purchase. This rear cap is being sold here as a replacement or back-up accessory.
In the Box
Nikon LC-ER8 Rear Lens Cap for WC-E75A Wide-Angle Adapter