Filmmakers can use the Tilta 85mm Adapter Ring to secure a lens with 85mm filter threading to their Tilta Mirage matte box. The adapter ring also features 85mm female threading on its front, allowing the attachment of a screw-on filter to the lens. Package includes:Tilta Adapter Ring for Tilta Mirage Matte Box (85mm)Supported Lens Diameter 85 mmFilter Size Supported 85 mmMount Type ClampRing Material Aluminum, SteelWeight 2.88 oz / 82 g