25PCS HSS CO Twist Drill Bit Set

● Made by HSS M35 5% Cobalt steel: Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, extremely heat resistant; for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
● 135° Split Point: the 135°quick-cut split point are self-centering and able to penetrate metals quickly with less pressure, prevent bits from "walking and wading". Easy cutting without need of center punch.
● Can be repair by sharpened as needed: this set cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drilling more holes than common HSS drill bits
● Professional Drill Bits: classic amber finish and round straight shanks, fully ground spiral groove design with high grinding accuracy, Best used for drilling in hard metal, including stainless steel, cast iron, hard plastics and woods etc. Not For Use on concrete, masonry and stone. Perfect match for workshop and DIY house working.
● Included Size: The 25pcs of M35 cobalt 5% steel twist drill bits including: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8.0mm, 8.5mm, 9mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm. Organized in a sturdy plastic storage case for easy transport to your workplace.
● Quality commitment: If for any reason you are not satisfied with your purchase, please contact us.
● Clear size mark: Each drill bit has clear size markings on the handle, making it very easy to observe and selected the size you desire.