For sealing holes in the 13mm (2764) supply pipe. Operating pressure range up to 3 bar/300 kPa. UV resistant design for improved performance and durability. Can also be installed at the end of 4mm (2772) Micro hose. High quality – 13mm blanking plugs that are made from UV stable plastic that is hard wearing and durable. Pack of 10 Compatibility: 13mm, 4mm