Stainless Steel "D" Style Low Profile Sanke Coupler is made out of durable 304 stainless steel and is NSF approved. This ensures that beer only comes in contact with sanitary stainless steel. The low profile style is one of the lowest couplers available on the market, ideal for situations where clearance is an issue.The gas port is 3/8" OD in diameter and will fit hose with an ID of 3/8" or 5/16".Sanke "D" style couplers are the standard connection type for most North American beer brands. Specifications: Material: 304 Stainless Steel Finish: Polished Stainless Steel Tailpiece Material: 304 Stainless Steel Probe Material: 304 Stainless Steel Type: "D" Low Profile Style Handle Type: Twist Handle Inlet: 3/8" OD Barb Outlet: 1/4" OD Barb Height: 2 1/4" OD Barb Find Your Brand:(Always confirm with the store when purchasing the keg if it will be compatible.)Sanke Coupler Chart