This radiator valve tail connects a radiator to a standard radiator valve.
Plain 15mm part is 60mm long, total length of the tail is about 80mm, can be cut down to size with hacksaw.
The male thread is 1/2 inch BSP (normal size for the connections on a radiator) the tail has a compression nut and olive (included) to suit a valve with a 15mm compression type outlet.
Will not suit a union type radiator valve with a bigger 3/4 inch BSP outlet.
** BSP thread sizes are measured a special way - have a look at our information page for more details **