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Mutiple sizes-Includes 3 Gold Screw Countersinks: 3/32”x3/8”, 7/64”x3/8”, 1/8×3/8”
Quick change-The 1/4″ hex shank can be used with power drills and quick-change chucks.
Durable – High-grade carbide tipped, fully sharpened edge, quick drilling, easy to use, in longer life
Suitable for woodworking-Compatible with drilling machines with chucks, used to drill holes on wooden boards or wooden floors
Precise punching-punching can be done quickly and accurately. The external thread design can help discharge waste when drilling, so as to ensure successful drilling