The 250mm 10in bailey drain test plug with brass cap is engineered for testing larger diameter drainage and sewer systems. This substantial plug features centre locking design with steel plates, steel wing nuts and a brass blanking cap, delivering the reliability required for commercial drainage testing and larger residential installations. The 250mm size is commonly specified for main sewer connections, large commercial drainage systems, and industrial applications where secure sealing of larger pipes is essential. The combination of steel strength and brass corrosion resistance ensures dependable performance across multiple testing cycles, whilst the centre locking mechanism provides even pressure distribution for accurate results. Features and benefits bull 250mm 10in size ideal for larger drainage and sewer systems bull heavy duty steel construction for demanding applications bull brass blanking cap resists corrosion in harsh environments bull centre locking mechanism ensures reliable, even sealing bull steel wing nuts provide secure, tool free installation bull suitable for both air and water testing procedures specifications tool type drain test plug