ND8 Filter for DJI OSMO Inspire 1 X3. Note: this ND filter can’t be rotated after installed. Added a threaded ring in front of the lens to make it more stable. Upgraded lens, provided by brand manufacturer which is specialized in professional photography equipments, is high quality with excellent effects. Updated gorgeous acrylic package, practical with elegant appearance.Antiskid knurling and hard anodizing design, for safe installation and gorgeous appearance.