Heavy Duty Hole Enlarger Set Nine Sixteenths Inch To One Inch With One Half Inch Shank Vortex Tip Drill Bit Set Four Piece Built Tough Black And Gold Three Flats Shank Made In USA Enlarge Holes Through Cast Iron Brass Steel Copper Plastic

Designed to enlarge holes cleanly without damaging the hole edge, this rugged drill bit set uses a vortex tip to reduce heat and wear, delivering longer life. It is well suited for cast iron, brass, sheet metal, steel, copper, and plastic. The set includes 9/16 in, 5/8 in, 3/4 in, and 1 in sizes, with 1/2 in shank and 3-flats on the shank for secure grip. Made in USA.

✅ Sizes: 9/16 in, 5/8 in, 3/4 in, 1 in
✅ Shank: 1/2 in with 3-flats for grip
✅ Tip: Vortex design reduces heat and wear
✅ Made in USA

💡 What is a hole enlarger drill bit set used for in metalworking and plastic fabrication? This handy tool widens existing holes cleanly and helps finish precise tolerances. - Handy for enlarging holes in cast iron, brass, steel, copper, sheet metal, and plastic - Vortex tip minimizes heat buildup and wear for longer tool life - Includes 9/16, 5/8, 3/4, 1 in sizes with a 1/2 in shank