Metal Stud Fastener Kits can be used to attach to a single stud only when weight of mount and equipment does not exceed 35 lb. Metal stud fasteners can be used on double stud Peerless mounts only where specified. See specific models for quantity needed and compatibility. Can be used to attach loads greater than 35 lb only where specified for Peerless models that contain a wall plate which spans two or more studs.