1290H-Air-Bag-Black-PVC-100mm-4in-Monument-1291K-p-The-Monument-Air-Bag-is-a-durable-quality-flexible-drain-plug-for-plugging-drains-&-pipes-This-plug-is-fitted-with-peripheral-ribs-that-will-give-a-better-seal-&-grip-on-the-tube-or-pipe-being-repaired-or-replaced-It-has-a-long-feed-hose-that-is-fitted-with-a-Schrader-valve-to-quickly-release-the-pressure-p-p-For-use-with-Monument-drain-testing-equipment-Inflate-with-MON1308-pump-p-p-Suitable-for-blocking-off-drain-pipes-w