Cobalt M35 drill bits provide superior specialized performance. These bits are needed for extreme high heat encountered with drilling in hard metal heat-treated steel and stainless steel. They are durable and easy to use.
Drill America DWD29J-CO-PC Qualtech 29 Piece Cobalt Steel Jobber Length Drill Bit Set in Plastic Case, Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degrees Split Point, 1/16" to 1/2" Size
The cobalt increases the strength of the steel and makes it more heat-resistant; this is an important factor in drilling hard materials because the friction of metal against metal can produce high temperatures that damage the material or the drill bit.
Shop 5 Cobalt Drill Bits products at Northern Tool + Equipment
Drill Hog 29 Pc Cobalt M42 Drill Bit Set in Black Round Case w/ Belt Clip. Drill Hog is proud to release the newest technology in drill bits. These bits are made from virgin hi-grade Cobalt M42 steel.
This is a super handy and portable set of 29 jobber length drill bits includes inch sizes 1/16″ to 1/2″ in 1/64″ increments. Cobalt steel provides a long-lasting tool life.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.