Thread size S60 x6 1/2inch (13mm) center 1/2inch (13mm) BSP thread Made of premium material for durable and long term use. This product can be used as a quick contact switch, which is for ton IBC valve. Fits most standard UK and European IBC containers Product Description Specification: Brand New Type: IBC Tank Adapter This is an IBC adapter with brass bib tap and Snap-On Tap connector. Allows attachment of a standard 1/2inch (13mm) garden hose in conjunction with a Snap-On hose connector. These fittings are Hoselock compatible. The tap also acts as a useful back-up safety valve, or for precise flow control. These items are supplied fully assembled and not in kit form. It will fit most standard IBC containers in the UK and Europe where the buttress thread is an S60X6 coarse thread. An S60X6 Buttress thread measures 60mm from end to end of thread and has a 6mm pitch (distance between threads). If your tank buttress is not an S60X6 (about 20% not are not), you can purchase a Buttress Thread Converter which will convert the thread to S60X6 you will need. Package Included: 1 x IBC Tank Faucet Adapter