2-1/4" Sheet Metal Holcutter Quad Lead 1/8" DOC 14268 SI5505 Flute length 40mm

Flute length 40mm

4/ ¼ stone

50 x M24 x 48 x 1

For External Circlips 18-60mm

1/2 UNC Imperial 40 Piece Zinc Plated hex Bolt & Set Screw selection pack

2-1/4" Sheet Metal Holcutter Quad Lead 1/8" DOC 14268 SI5505 Flute length 40mmThe Holcutters, 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 extend 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