Hougen 14005C Holcutter Kit Includes: Arbor, Pilots, Hex Washer, instructions, and HSS Holcutters: 7/8, 1-1/8, 1-3/8, 1-3/4, 2 & 2-1/2" Holecutter Arbor The heat and hardness resistance

The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools

Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials

The blue colored foam allows you to

RotaMagic extends tool life and improves cutter performance

Spot weld Removal

Hougen 14005C Holcutter Kit Includes: Arbor, Pilots, Hex Washer, instructions, and HSS Holcutters: 7/8, 1-1/8, 1-3/8, 1-3/4, 2 & 2-1/2" Holecutter Arbor The heat and hardness resistanceHolcutters 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