Good for 1, 2 and 3 sided Scrim King Products. Designed to be used for hanging Scrim King products only. To attach 1 and 2 sided Scrim, slide clamp over the pole of tripod to desired area. (just below speaker/T-bar/fixture etc.) tighten and attach Scrim.3 sided Scrim, Slided 3 sided Scrim over Tripod to desired area. Unscrew clamp all the way. stretch clamp around the Scrim King collar and tighten. (Put your speaker/T-bar/fixture on last)This Clamp is not rated to hang anything else other than Scrim King products.  The Scrim King clamp will fit tripods with diameter from 1 3/8 inches to 1 1/2 inches.