This listing is for a Pack of 2 Without external compression nuts, mechanical press jaws, or internal solder ring bulges, end feed elbows have a minimal outer diameter. This allows pipe runs to easily pass through tight floor joist notches, wall chase channels, and pipe lagging. These copper end feeds aresuitable for both hot and cold water-based plumbing systems, as well as low-pressure gas installations and central heating systems Made entirely of high-grade copper joined by solid solder, these elbows contain no rubber O-rings or plastic components to degrade over time—allowing them to withstand continuous high temperatures in central heating loops and hot water systems. WRAS Approved and BS EN 1254 compliant, Manufacturer: Navigator