These are a new pair of chrome brass cranked/offset adaptors, particularly for use in situations where the supply pipes are not spaced exactly at the correct distance apart, allowing adjustment to suit the thermostatic bar connections. Both threads are female, one 1/2" and the other 3/4" BSP, please see photo. Ebay has similar for £4, but I am asking £3. Buyer collects, or could be posted at.