Irwin Wood Countersinks #4 x 7/64" Size:#4 x 7/64" Coverage is dependent upon substrate

Coverage is dependent upon substrate

Sturdy aluminum and vinyl construction installs in minutes

AP334 series

connects cast iron or plastic to cast iron or plastic

Non-preset

Irwin Wood Countersinks #4 x 7/64" Size:#4 x 7/64" Coverage is dependent upon substrateTapered 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.