IRWIN Wood Countersinks feature a tapered drill and wide flutes that drill fast, clean pilot holes and ensure a tight fit for screws. They have an adjustable four-cutter counter bore attachment that cuts fast and clears chips quickly for fast, smooth countersinking applications. The counter bore feature attaches flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth. IRWIN SPEEDBOR countersink bits fit all standard 1/4" quick-change chucks, including impact drills.
#8 Wood Countersink
This product is highly durable
This product is manufactured in China.
Tapered drill with widened flutes for drilling fast, clean pilot holes and ensures tight fit for screws
Adjustable four-cutter counter bore cuts and clears chips quicker for fast, smooth countersinking
Counter bore attaches to flats on shank with two hex screws for a secure fit and can be adjusted for controlled pilot hole depth
1/4" quick-change shank reduces slipping in standard chucks and is compatible with all 1/4" quick-change chucks, including impact drills