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This #3 grommet hole cutter cuts 7/16-inch holes in fabric for the installation of plain washer and spur grommets. The round design of this hole cutter makes the tool more secure in your hand than other designs and helps drive the force straight down through the fabric for clean cuts every time. Use the Rubber Cutting Block, a soft wood surface or a phone book under the fabric to prevent damage to the tool.
For plain washer grommets, order the same size hole cutter as the grommet, (e.g. #3 hole cutter for a #3 grommet). The hole cut will be slightly smaller than the barrel of the grommet, just push the barrel of the grommet through the cloth. When installing spur grommets, the same size will also work, but it's a tight fit.