The 375mm (15in) Bailey Drain Test Plug with Brass Cap represents a heavy-duty solution for testing extra-large diameter sewer and drainage systems. This substantial plug features centre locking design with steel plates, steel wing nuts and a brass blanking cap, engineered to handle the most demanding commercial and industrial drainage testing applications. The 375mm size is essential for major infrastructure projects, large industrial facilities, and main sewer interceptors where maximum sealing capacity is critical. The brass cap ensures reliable corrosion resistance over extended service life, whilst the steel components provide exceptional structural strength for high-pressure testing scenarios. Features and Benefits:375mm (15in) size for extra-large diameter drainage systemsHeavy-duty steel construction handles demanding test conditionsCorrosion-resistant brass cap ensures long-term reliabilityCentre locking mechanism provides secure, even sealingSteel wing nuts all