![Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics](https://m.media-amazon.com/images/I/41NmEPFROCL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics
![Nikon Objective Replacement Cover for Monarch 42mm Series - Single (NIKON-6065) | Visions Electronics Canada Nikon Objective Replacement Cover for Monarch 42mm Series - Single (NIKON-6065) | Visions Electronics Canada](https://www.visions.ca/Images/Catalogue/Product/Dir1/48771_l_1.jpg)
Nikon Objective Replacement Cover for Monarch 42mm Series - Single (NIKON-6065) | Visions Electronics Canada
![Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics](https://m.media-amazon.com/images/I/61YzrUDzngL.jpg)
Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics
![Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics Amazon.com : Opticron Rubber Objective Lens Covers 42mm OG M Pair fits models with Outer Diameter 51~52mm : Electronics](https://images-na.ssl-images-amazon.com/images/I/519ObdDjJcL._AC_UL600_SR600,600_.jpg)