~300mm lengths of 40mm Class 12 PVC Pressure Pipe for Pools and Spas - Short Pieces. May be just shy, or a bit longer than 300mm in length.

40mm CL12 PVC has an OD of approx 48mm.

PVC Pressure Pipe is widely used for irrigation and water supply for domestic and commercial applications. There is a grading system with pressure pipe which is basically different thicknesses for different areas and the different gradings of Class 9, Class 12. Class 12 is recommended for all Spas & Pools, especially for warm water.

Note for non-plumbers: Please See This PVC Pressure Pipe Dimensions Info, as PVC Pressure Pipe uses "Nominal" names, and does not measure what it's called.