Expand the number of compatible lenses your Parrot Pro teleprompter can utilize with this Padcaster Parrot Pro Ring Expansion Bundle. Included in the bundle are seven rings of varying sizes—37, 40.5, 43, 46, 49, 62, and 72mm—to accommodate lenses with different filter diameters. Their solid aluminum construction features a flange specific to the Parrot Pro that forms a light-proof seal between the lens and the teleprompter.