AV Stumpfl wing screw set for connecting two AT48 Monoblox 64 and MonoClip 64 frame components. The screws are dedicated hardware for the AV Stumpfl Monoblox 64 frame system. This product is supplied as a set and is identified by article number BFZ-F/S/BXV/AT48/2. It is a frame or system component rather than a projection screen, surface, video signal device, or complete screen system.