RAINPAL BBF020 Brass Bulkhead Tank Fitting (1/2 inch Female Pipe and 3/4" Male Garden Hose Threaded) (1) NOW shipping Lead Free Compliant Version, Please note: Lead Free Compliant is Not 100% Lead Free. Contains less than 0.25% lead. 1/2 inch Female Pipe Threaded Inside, all the way through, install 1/2 inch hose bibb, faucet etc on either end 3/4 inch Male Garden Hose Threaded, connect any garden hose to this fitting Embeded Gasket Provides Strong Seal without Slipping. Need 27 mm or 1-1/16 to 1-1/8 inch diameter hole to install