Half Inch By Twelve Inch Extra Length Aircraft Black Oxide Drill Bit With Speed Helix For Three Times Faster Drilling, Fifty Percent Longer Life Than HSS, Reduced Heat, Heavy Duty Pro Grade

Single extended-length 1/2 in x 12 in black oxide drill bit
✔️ 1/2 in dia, 12 in length, speed-helix for faster drilling

This extended-length, half-inch drill bit is designed for metalworking and heavy-duty shop use. Its speed-helix geometry starts cutting on contact for cleaner holes and faster drilling, reducing heat buildup. It handles steel, aluminum, copper, brass, oak, maple, PVC and composites, making it handy for aerospace maintenance, automotive work, and general fabrication.

✅ 1/2 in diameter
✅ 12 in overall length
✅ Speed Helix design for faster drilling
✅ 50% longer life than HSS
✅ Works in steel, copper, aluminum, brass, wood, PVC, acrylic and composites

💡 What is a speed-helix drill bit used for and why choose black oxide coating?

Handy for fast, clean holes in metal, wood, and plastic. - Improves cutting speed and reduces heat in steel and other tough materials - Split-point design reduces walking on contact - Black oxide coating adds durability and corrosion resistance - Longer life than standard HSS bits for busy shops