Brass Craft BF3-12DL F 1/2-Inch Flare by 7/8-Inch Ballcock by 2-Inch Brass Craft BF3-12DL F Toilet Connector, White 1/2-Inch OD inlet Outlet style: 7/8-Inch ballcock (toilet) Plastic nut More flexible than stainless steel Easier installation (especially in cramped quarters)