This is a classic 1/2 Barrel Sankey 'D' Commercial Keg. It is made of 304 beverage-grade stainless steel in an ISO 9001-Certified facility, is NSF approved, has smooth machine welds with rolled top and bottom chimes for ease of transportation. This American Made keg is durable and is the professional brewer's top choice. This comes fully equipped with a Sankey 'D' connection with the industry-standard micro matic / DSI Spear valve. This is the best option for your biggest brewing jobs.