AQUARIUS Tank Tap 1/2 Inch. Brass Bib Tap And Snap-On Tap Connector. This Tap Is Compatible With a Standard 1/2 Inch (13 Millimetre) Hose Connector. Also Acts As Useful Back Up Safety Valve, Or For Fine Flow Control. Made Of Premium Material For Durable And Long-Term Using. The Buttress Thread Is A S60X6 Thread. AQUA021