Everflow Supplies NRLB0124 4" Long Black Left/Right Steel Nipple Pipe Fitting with 1/2" Nominal Size Diameter Overflow part number NRLB0124 Black 4 inch long left/right Steel nipple 1/2 inch Nominal pipe diameter with male threaded ends With standard right-hand Thread and reverse Thread on other end Meets or exceeds all applicable ASTM and ANSI standards