Air Chief Industrial Semi Auto Coupler Standard Hose Barb, 1 2 in ID, 1 2 in Body Size, Steel ORS NASCO [Nom] 3 1 4 in Face Width [Nom] 3 1 4 in Face Width 3 8 in Hazmat NO Jan San Catalog NO No Oversized ratchet with soft rubber grip allows for easy adjustment when wearing gloves Removable comfort cradle is a pivoting head pad that conforms to any head for the highest degree of comfort 3 position slider adjusts distance of the lens from your eyes for precise vision Crown strap adjustment allows the headgear to be raised or lowered for maximum comfort and performance Sweatband helps absorb perspiration and prevents sweat from interfering with vision and 303 stainless steel construction Interchangeable with many other makes Semi automatic pull sleeve to connect Couplers shut off when disconnected Brass