RV Builder Tools and Accessories: Drilling - Unibits/Misc

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Step Drill Bit, 3/16-Inch to 7/8-Inch

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STEP DRILL #4 3/16-7/8" 12 SZ. STEP DRILL #4 3/16-7/8" 12 SZ. STEP DRILL #4 3/16-7/8" 12 SZ. STEP DRILL #4 3/16-7/8" 12 SZ. STEP DRILL #4 3/16-7/8" 12 SZ. Save time because you don't need to change drills for different-sized round holes in thin materials. Each drill acts as a pilot for the next size. Made from industrial-grade high-speed molybdenum steel heat treated for maximum durability. SpeedPoint tip penetrates faster and prevents walking.