Fabricate fast, superior quality holes with Blair Rotabroach Cutters. Rotabroach Cutters are the perfect hole making tools for sheet metal and plate materials up to ¼-in. thick. Precision ground cutting teeth cut around the hole allow the center to pop out as a slug leaving a virtually burr-free hole.
Blair Rotabroach Cutters cut three times faster and last 10 times longer than twist drills or hole saws. Cutters are available individually or in a set with sizes from 5/16 in. to ¾ in. and are made in the USA.
Link: Blair Equipment Company