Oatey clevis hanger. Designed to support PVC, ABS, galvanized, black iron and cast iron piping. Constructed of durable steel, these hangers allow for the expansion and contraction of multiple pipes and have been rigorously tested and proven to last in many conditions. Diagonal nail holes allow for fitting the hanger into small areas. Oatey products have earned the trust of plumbing professionals for over 100 years.