The Test-Tite 83585 Pressure Relief Pneumatic Test Plug is a reliable and durable plumbing accessory designed for industrial use. Made of rubber with a textured surface, this test plug features a 1-1/4″ to 1-1/2″ size range and an NPT air connection type. It is suitable for maximum pipe sizes of 1 1/2 inches and minimum pipe sizes of 1 1/4 inches, providing a secure fit for testing and inspection purposes. With a manufacturer reputation of Test-Tite and a country of origin in the US, this test plug is a high-quality product for plumbing applications.