1-9/16" Sheet Metal Holcutter Quad Lead 1/8" DOC 14250 Product Type_Punch Sets the Z-Carb-AP offers three stages

the Z-Carb-AP offers three stages of chatter suppression:

Finish: Gold Dichromate

Resistant to the harmful conditions under the hood

Cutter d2=8

GROMMETS INCLUDED: No

1-9/16" Sheet Metal Holcutter Quad Lead 1/8" DOC 14250 Product Type_Punch Sets the Z-Carb-AP offers three stagesThe 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