Drain test plug Drain Test Plugs redefine excellence in drain and sewer testing. Covering a broad spectrum of sizes, our plugs are available from a compact 1.5" to a robust 24". Whether you're conducting pressure tests on residential or commercial pipes, our comprehensive size range ensures a precise fit for every application. Trust in CRYSTAL for quality, reliability, and versatil... https://globalrubberfactory.com/product/drain-test-plug/