One Quarter Inch By Twelve Inch Extra Long Black Oxide Twist Drill Bit Solid Workhorse Steel For Smooth Metal Boring And Tough Job Site Tasks That Deliver Zero Hassle Consistency And Knockout Drilling Power Daily

Quarter inch extra long black oxide twist drill bit
✔️ Solid steel construction for reliable precision drilling depth

This extra long twist drill bit is built for deep hole machining on steel, aluminum, and tough alloy sheets. Machine shops and metal fabricators rely on it to cut clean through thick material without walking or overheating.

✅ Quarter inch cutting diameter matches standard industrial mandrels
✅ Twelve inch shank length reaches far beneath tight workpiece edges
✅ Black oxide coating resists heat buildup during heavy cuts

💡 What makes an extra long twist drill bit handy for deep hole drilling jobs?
This layout stays handy when you are chasing deep bores and works like a champ under heavy feed pressure.
- Helix angle kicks swarf out fast so you never fight chip packing
- Thicker core stops whip when you feed hard into thick plates
- Straight edge alignment keeps holes centered from start to finish

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