IRWIN Countersink Tool Wood Drill Bit Raised Panel Bottom block length extends for

Bottom block length extends for 54" and 60" sizes

strong holding magnetic edge

due to density and optimized stove fill

This tread construction is the industry standard

Solid wood with flat base - Sits on top of post rather than over it

IRWIN Countersink Tool Wood Drill Bit Raised Panel Bottom block length extends forTapered drill with widened flutes for drilling fast, clean pilot holes. Adjustable four cutter counterbore cuts and clears chips quicker for fast, smooth countersinking. Counterbore 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.