1-3/4" Sheet Metal Holcutter Quad Lead 1/8" DOC 14256 Product Type_Carburetor Spacer 30mm Long Series Drill 0

30mm Long Series Drill 0

Thread M9 x 1

Throat Depth x Height : 79 x 34mm

5 x 40 Metric Coarse 50 Pieces Zinc Plated Hex Bolts & Nuts

3/4" BSP HSS Die Nut

1-3/4" Sheet Metal Holcutter Quad Lead 1/8" DOC 14256 Product Type_Carburetor Spacer 30mm Long Series Drill 0The 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 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