1、OPTICAL GLASS: Drone lens is made of for Schott optical glass with a high definition grinding process. 2、COATING PROCESS: Drone camera lens filter adopts multi layer nano coating process, with excellent performance in use. 3、LENS PROTECTION: Drone camera filter has waterproof, oil proof, dirt proof and scratch proof performance, which can guard the lens very well. 4、EASY TO INSTALL: Drone lens filter is easy to operate and can be quickly and non destructively installed and replaced filters. 5、APPLICABLE MODELS: Drone filter is suitable for AVATA traversing machine, please confirm your drone model before purchase. Item Type: Drone Filter Material: Aluminum Alloy ( Frame), Optical Glass Color: Black Lens Size: Diameter Approx. 27mm/1.06in, Height Approx. 4.2mm/0.17in Applicable for AVATA Traversing Machine 1 x Drone Filter 1 x Storage Box