Irwin Speedbor Wood Countersink - #8

Features

• Tapered 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

Specifications

• Screw Size: #8
• Bit Diameter: 11/64"
• Counterbore Size: 3/8"
• Plug Size: 3/8"
• Shank Size: 1/4"