Each metal drill bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch. Offers superior durability, speed and selection to support most general purpose applications. Speed helix design for three times faster drilling than standard bits. Easier drilling, reduced heat and extended drill bit life. For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
M-7 high speed steel for strength, heat resistance, and wear resistance when drilling in wood, metal or plastic; can be used with keyless chuck. Three-flatted shank design provides better chuck grip and reduces slippage. All Silver and Deming bits are 6" long and feature a 1/2" reduced shank that fits all 1/2" drills.
Black oxide coated for greater wear resistance; split point drills on contact and prevents walking. Parabolic flute design improves chip ejection in metal and wood drilling applications. Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute.
Designed for extreme durability and long life. Parabolic flute form clears chips and debris fast to keep the bit cool. A precision start 135 split point tip starts on contact to keep the bit from walking for fast accurate holes. Ideal for drilling on curved surfaces. Requires less effort to drill and is highly recommended for use with portable drills. Reduced shank diameter for use in 1/2'' chucks. The 3-flat secure grip shank won't slip in the drill chuck. Includes: (1) S & D Black Oxide drill bit.