Welcome to Inton Store: Large diameter creates flat-bottomed hole,very sharp Small tip includes clearance hole for screw shank Drill guide for pocket holes Recommended for use with corded high-rpm drills Specification: The Whole diameter size:3/8"(9.5mm),the head diameter:11/64"(4.3mm) total Length:6.5" (160mm) Package include: 1 x 3/8" hex Twist Step Drill Bit 1 x 3/8" stop collar
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