Vouyar Cobalt Steel Single End Countersink Drill Bit with Cobalt Coating Finish for Hard Metal Wood, 90 Degree M35 HSS, 6MM Round Shank, 9.7MM Body Diameter

M35 Cobalt HSS: Super tough, resistant to wear, high thermal threshold. Designed for tackling tough materials like stainless steel and other high-performance alloys. Please ensure sufficient lubrication and cooling in extensive uses., Cobalt coating helps with wear and thermal. Please be reminded that the countersinking performance will not be impacted even if coatings are worn down. The wear and tear of coating is normal and the performance relies on hardness of the countersink bit itself., PRO compatibility for professional machinist and DIY enthusiasts: Round shank can be fitted with hand drills and bench drills. We recommend using bench drills for optimal results when working with hard alloys., The spiral flutes prevent chips from clogging, making your work more efficient., 90 degree cutting angle, countersinks 2 - 5 mm