Product Description Master Plumber 822-434 Sink Hole Cover 1-3/4" Diameter is made of whiter, powder coated steel. Fits standard sinks. Includes wing nut. Comes in carded package. From the Manufacturer Master Plumber 822-434 Sink Hole Cover 1-3/4" Diameter is made of whiter, powder coated steel. Fits standard sinks. Includes wing nut. Comes in carded package.