Irwin 1882793 Countersink Bit Set, Specifications: 1/4 in Shank, HSS, Includes: #6, #8, #10 Countersinks tools--07-20-26 CNC machined square head for

CNC machined square head for greater accuracy

one-size fits most

Stamped socket sizes portable carrying case

Separate Hi/Low measurement scales

ventilated cape back

Irwin 1882793 Countersink Bit Set, Specifications: 1/4 in Shank, HSS, Includes: #6, #8, #10 Countersinks tools--07-20-26 CNC machined square head forTapered drill with widened flutes for drilling fast, clean pilot holes. Adjustable four cutter counterbore cuts and clears chips quicker for fast, smooth counter sinking. 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 in quick change shank reduces slipping in standard chucks and is compatible with all 1 4 in quick change chucks, including impact drills. Set includes