A new PEX swivel dropear elbow fromMarshall Brassmakes shower arm installation easier, faster and less costly. Designed to mount on the back wall surface with three screws, the 1/2-inch PEX brass elbow is coupled with a 1/2-inch female swivel nut to alleviate shower arm orientation problems. A durable sealing washer eliminates the need for teflon tape or pipe dope.