Furniture grade PVC. 3/4" - Outside diameter of pipe = 26.7mm (Also known as Size 2)
Currently in stock at our UK warehouse.
IMPORTANT INFORMATION: SIZE 2 (3/4") Fittings measure 26.7mm internally and are designed to take 3/4" Sch40 pipe which also has an outside diameter of 26.7mm.
They are NOT compatible with plumbing / waste pipe commonly found in DIY and plumbers merchants.