Description Brass 2nd Stage Quick Disconnect With Swivel Using the same brass coupler as the AC990 above, this product provides the additional benefit of adding a brass swivel to the male portion Installs between LP hose and 2nd stage, or full face mask The rotating swivel action reduces torque on the 2nd stage, leading to increased comfort Low pressure use only – below 200 psi Brass 2nd Stage QD w/ Swivel Male Only Install on multiple 2nd stage regulators or full face masks