Hougen 14009 Arbor (3/8" Chuck) for Quad-Lead Threaded Cutters includes pilot & hex washer 75002.5PR Hougen 02496 Rubber Collet fits

Hougen 02496 Rubber Collet fits 1/4"  - 1/2" Taps - For Tapmatic

this case is the replacement

annular cutters

For use with Hougen® Portable Magnetic Drills and many competitive models on materials up to 275 BHN (28

Kit includes cutters of size 1/4"

Hougen 14009 Arbor (3/8" Chuck) for Quad-Lead Threaded Cutters includes pilot & hex washer 75002.5PR Hougen 02496 Rubber Collet fitsHolcutters are not hole saws. They're precision ground, heat treated tools that easily cut thru the stock rather than ripping, tearing, and pushing thru as do typical hole saws. They can produce holes three times faster and cleaner than hole saws in sheet metal and have dramatically extended tool life, too. All sizes have a "shoulder" to prevent plunge thru, which is especially useful when drilling into live electrical boxes. See for yourself why