Air Chief Industrial Semi Auto Coupler Standard Hose Barb, 1 2 in ID, 1 2 in Body Size, Steel ORS NASCO particularly where minor oil contamination particularly where minor oil contamination of the flange surfaces can occur Particularly suitable for use on aluminum substrates where very good adhesion is achieved Provides resistance to low pressures immediately after assembly brass end caps prevent ends from splitting Red foot figures for clear visibility and identification and 303 stainless steel construction Interchangeable with many other makes Semi automatic pull sleeve to connect Couplers shut off when disconnected Brass