Bosch Hole Saw HB550 5 1 2 Inch Bi Metal 8 Percent Cobalt Alloy Heavy Duty Cutter (Progressor Tooth 1 5 8 Depth Wood Mild Steel Boring Mandrel Tool) Floor Jack Composition Wood Pro Tip: When milling Composition Wood Pro Tip: When milling 3 4 inch panels using an integrated back cutter Subflooring Country of Origin Manufacture Canada Pro Tip: Adjust your pneumatic coil nailer's drive depth setting so the full round head sets perfectly flush with OSB wall sheathing The Bosch HB550 5 1 2 Inch Bi Metal Hole Saw 8 Percent Cobalt Alloy Heavy Duty Cutter for Wood and Metal Applications delivers specialized deep cavity substrate excavation utility and exceptional rapid coring efficiency across demanding commercial HVAC ventilation setups HVAC Ventilation Staging: Boring massive