1、The lens is made of high quality optical glass, and the high definition grinding process guarantees the best quality image at all times. 2、Multi layer nanometre coating technology, the lens has waterproof, oil proof, anti fouling, and anti scratch performance. 3、Easy to install. Non destructive and quick installation, can quickly replace the filter. 4、High end optical glass makes it ideal for capturing amazing and clear images, allowing you to take clearer, better quality photos. 5、The lens housing is made of aluminum alloy, which is durable and wear resistant. Item Type: Model Airplane Accessories Product Style: ND8+ND16+ND32+ND64 Lens Product Material: Aluminum Alloy + Glass Applicable Models: For Mavic Pro 4 x Lens