Tapered drill with widened flutes for drilling fast, clean pilot holes and ensures tight fit for
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
1/4 quick-change shank reduces slipping in standard chucks and is compatible with all 1/4
Adjustable stop collar attaches to counter bore with two hex screws for a secure fit and can be

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 6.3 inch
Height : 1 inch
Length : 8.3 inch

Item Weight: 0 ounce (View shipping rates and policies)
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ASIN : B00IZFHRXA

Product Description

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.