1The lens is made of high quality optical glass, and the high definition grinding process guarantees the best quality image at all times. 2Multi layer nanometre coating technology, the lens has waterproof, oil proof, anti fouling, and anti scratch performance. 3Easy to install. Non destructive and quick installation, can quickly replace the filter. 4High end optical glass makes it ideal for capturing amazing and clear images, allowing you to take clearer, better quality photos. 5The 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 Lens1. Manual measurement, allow 13mm/0.040.12in error.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.