**********Optical
Glass: 16Layers premium multicoated optical glass Waterproof, Scratchproof,
Dustproof,
Oilproof*****Construction: Gimbal Safe aircraft grade super lightweight CNC aluminum construction frame*****What's is included:
ND8*****Installation: Efficient SCREW-ON system for easily attaching/detaching*****Compatible with DJI Osmo Action Camera