The Kegco MK-K9G-CASK Keg is made entirely of food/beverage grade AISI 304 stainless steel and can hold up to 10.8 US Gallons of beer. The keystone bung and shive bung openings (thread information). All seams have been TIG machine welded for smooth and consistent seams with no burn residue. They have fully rolled top and bottom stainless steel chimes. All surfaces of the keg have been pickled (chemically descaled) and fully passivated for a clean, sanitary and corrosive free surface. Used by breweries all over the world, these kegs are an excellent edition to your professional brewery operation, allowing you to offer an unpasteurized and naturally carbonated option to your lineup for special events and tastings.Please Note: Commercial kegs are intended to be used by professional breweries that have the specialized equipment to properly clean and sanitize these style kegs. These kegs are not recommended for use by home brewers who want to dispense beer using a commercial keg. There is no way to effectively clean and sanitize them without specialized equipment. We will not accept returns on these kegs purchased for home or personal use. In order to tap a cask keg, you would need a keystone bung, a shive bung, a hard spile, a soft spile, a cask tap and a plastic tail or turndown spout. The bungs can be plastic or wood but we find that wood bungs create a better seal with less leaks.Options:Brewery name embossed or stamped on Chime (special order, 60-90 days lead time)Bungs and Beer Engine not includedQuantity Discounts are available. Please call 1-800-710-9939 for details.