Combination countersink and/or counter bore for standard wood plugs. The counter bore size is 3/8" for use on hard wood using a # 4 screw. Standard hex shank fits all power bit quick change chucks. Alloy steel & thru hardened for long life - can be resharpened. Your drill will not slip when using large 1/4" socket head screws. Two flute construction for fast & clean chip removal. Made in USA by Snappy.
Features:
• Combination countersink and/or counter bore for standard wood plugs.
• Standard hex shank - fits all power bit quick change chucks
• Alloy steel & thru hardened with a 82 degree angle
• Drill bits are adjustable for different length screws