Manufactured from hard, durable plastic the 1″ drain off (DOF1-R) is fitted to make cleaning and disinfecting quick and easy. This drain-off is available to purchase as a Single unit Retail Pack or as an Accessory Box of 12 pieces. The neoprene seals around the base and in the cap ensure a waterproof and leak free seal and the retaining nut makes it quick and easy to change also.