You will get the two valves and screen filters that are pictured. These fit most British bikes from the 50s to the 80s. These are better quality than others advertised. You get the main valve with the tube and the reserve valve without tube. The threads are 1/4" BSP. If the bung hole is 1/2" ID then these will work on your British gas tank. You can find the spigots in our ebay store. Call with any questions

This is a petcock set / short for petrol cock or in USA terms gas valve /
Pipe sizes are measured by ID, not OD
National pipe is 18 TPI
British pipe is 19 tpi
the hole in the ID of the tube is 1/4"