Superior Tool's DrainKey. Features: The DrainKey's expanding design internally grips in a 360° pattern. Three knurled shoes that expand when the tool is turned counterclockwise with a crescent/adjustable wrench until the jaws grip the drain and the drain is loosened and removed. Loosens/Installs bathtub drains, 1-1/4" or 1-1/2" closet spuds, duplex strainers, jr. duo strainers, jr. basket strainers and tray plug drains. Coated finish for corrosion resistance. Instructions included.