G.T. Water Products, Inc. MTP152 Safe-T-Seal Combination Cleanout Plug, 1-1/2-Inch 1-1/2-Inch combination cleanout plug Easy to install and remove; economical and reusable Positive sealing with no metal parts to rust Tests head pressure through 3 stories, up to 50-Foot/head pressure Made in the U.S.A.