The 230mm 9in bailey drain test plug with brass cap delivers reliable testing performance for medium to large diameter drainage systems. This professional grade plug features centre locking design with steel plates, steel wing nuts and a brass blanking cap, making it an essential tool for commercial and residential drainage testing projects. The 230mm size is particularly well suited for main building drains and larger waste pipe installations, providing the secure seal required for accurate pressure testing. The brass cap ensures long term corrosion resistance whilst the steel components offer the strength needed for demanding testing applications. Features and benefits bull 230mm 9in size perfect for main building drains bull robust steel construction with corrosion resistant brass cap bull centre locking mechanism provides reliable, even sealing bull steel wing nuts enable quick and secure installation bull suitable for air or water testing of drains and sewers bull professional grade quality for commercial applications specifications tool type drain test plug