Are their propeller lines in your Garmin VIRB videos? This filter reduces the propeller distortion ? even before you start editing. Simply place this neutral density filter lens on your VIRB action camera and share a smoother video with your friends. Includes one prop filter, a small screwdriver, four screws, o-ring, and plastic casing. Easy to install. This is the same filter found in the Garmin VIRB Elite Aviation Bundle.