This listing is for one 21" long clean out plug removal tool also know as a DWV (drain waste vent) plug tool. This patented box end wrench is used by plumbers and home inspectors to open threaded sewer plugs for inspection of sewer systems. This clean out plug wrench fits 3" and 4" sewer plugs used in most households. See pictures for exact sizes. Made out of corrosion resistant 6063 marine grade aluminum. To avoid confusion, the wrench fits plugs with a outside diameter of 3-4", the actual nut size is closer to 2"
If you are a swimmng pool tech and need a smaller wrench for skimmer and bottom drain plugs; We also make a 2" sewer plug removal tool with a nut size closer to 1.5" at this link:
CLICK HERE FOR THE SMALLER 2” WRENCH