Jones Stephens has built its reputation over the years in the plumbing industry, providing the market with thousands of products to complete any project. All parts are designed with quality engineering and construction to be durable and reliable and to meet Jones Stephens highest quality standards. This Plum-Tite Mechanical Test Plug features high density plastic construction with a neoprene gasket. The extra large wingnut makes it easy to install and remove. For use with cast iron and plastic pipes.