This listing is for a Pack of 2 FloPlast 20mm water pipe fittings compression fittings for MDPE pipe. Please note: Most plumbing products are measured using BSP thread dimensions which measure 1/4 inch larger than that stated. Therefore, this 3/4 Inch BSP thread actually measures 1 Inch in diameter. If your thread measures 3/4 Inch in diameter, you require the 1/2 Inch version of this product. Manufacturer: FloPlast.