The Tilta Clamp-On Adapter for MB-T12 Matte Box allows secure attachment of the MB-T12 4 x 5.65 matte box to lenses with a 110mm front diameter. Made from aluminium and stainless steel, it features a rectangular outer and circular inner design. The adapter connects using keyhole slots and fastens with a screw-on clamp for a stable setup without requiring rails or support rods.