SAMMYS® SWIVEL HEAD™ Rod Mount anchors feature an internal machine thread to facilitate threaded rod connections and an external self-drilling screw for attaching to steel. The Swivel Head eliminates distortion of threaded rod in sloped roof applications. It accommodates 3-1/2 x 12 pitch and allows 17° deflection from vertical which allows threaded rod to hang plumb. Assembled in the U.S.A.