The Bailey Drain Test Plug with Plastic Cap in 150mm (6 in) size is designed for larger diameter drainage systems commonly found in commercial properties and main sewer lines. This larger variant is essential for testing bigger bore pipes where standard plugs would be ineffective. The robust centre locking system ensures the plug remains firmly in position even under higher testing pressures associated with larger volume systems. Steel plates provide the necessary strength for demanding commercial applications, whilst the brass wing nuts allow for secure tightening by hand. The plastic blanking cap delivers a dependable seal across the full diameter, making this plug ideal for both air and water testing of substantial drainage infrastructure. Features and Benefits:150mm (6 in) diameter for larger commercial drainage systemsCentre locking design maintains position under high pressuresHeavy-duty steel plates for demanding applicationsBrass wing nuts provide reliable, corrosio