4" taper and 9" length is a drift punch that is used for aligning and sizing holes in vaious materials
exterior foundation walls & all other concrete & masonry surfaces
Full screw tip allows bit to self-feed
in-line stainless steel burners for even heat and a 360 sq
A protective clear finish for interior or exterior wood that is exposed to sunlight
1/8 x 12-In. High-Speed Split-Point Steel Drill Bit Forstner Bits 4" taper and 9" length1 8" x 12", High Speed Split Point Drill Bit, Helix Is 31°ree. Which Minimizes The Over Aggressiveness Of A True Parabolic Flute, 135°ree. Split Point For Quick Start & No Walk Applications, Parabolic Flute Design Improves Chip Ejection In Metal & Wood Drilling Applications, Back Oxide Coating For Greater Resistance To Wear, Industrial Grade Steel, For Drilling In Metal, Wood & Plastic.