Duotight Push In Fitting – 8mm(5/16) Push In To 5/8" The Malt Shop Sale! from 70000 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Suits Keg Couplers And Tap Shanks Plastic Quick Connect Pipe Hose Connector Fittings SKU:KEG858 8mm Ball Lock duotight equipment fitting Kegging push in