4" Pipe Plug | Expansion Range: 3 3/4 to 4 3/4 The Hand-Tite pipe plug is easy to install, requires no tools, and is reusable. With a wide expansion range and competitive pricing, the Hand-Tite pipe plug is the best wing-nut test plug on the market. -Made in the U.S.A. -Rugged nylon and rubber construction, with no metal parts to corrode. -Seals bell and spigot ends of plastic, iron or clay pipes. -Easy to install. No tools are required. -Reusable, and can be buried indefinitely. -Enhances the appearance of any pipe.