Drillpro 13Pcs M35 Cobalt Drill Bit Set 2-8mm HSS-Co Jobber Length Twist Drill Bits with Metal Case for Stainless Steel

Descriptions Drillpro M35 Cobalt Drill Bit Set HSS Co Jobber Length Twist Drill Bits with Metal Case for Stainless Steel Wood Metal DrillingSpecification BrandDrillpro Product nameDrillpro M35 Cobalt Twist Drill Bits SetMaterialHSS Co M35 CobaltSize2 2 5 3 3 5 4 4 5 5 5 5 6 6 5 7 7 5 8mmMeasurement SystemMetricShank TypeStraight ShankQuantity13PCS Metal CaseDiameter mm Total length mm Working length mm Suggested RPM2482218002 5553016003623314003 5693812004744410004 57948900586528005 59358750693587006 5100646507109706007 510970550811675500Note Cobalt drill bits require slow RPM when drilling metals The suggested RPM is only for your reference It may vary from different materials You can start from a lower RPM and adjust it higher slowly Once the bit can get into the workpiece the adjustment should be stopped Features ● M35 cobalt 5 cobalt added for higher hardness and heat resitance The Rockwell hardness is up to 67 It can cut faster and has a long life up to 12 times compared with the average HSS bit ● Self centering The guiding separation point of 135° rapid cutting is self centering which can penetrate quickly with less pressure The straight handle can be firmly fixed and accurately centered which is suitable for standard bit chuck and conventional round chuck ● Efficient drilling without walking Remove chips and particleseasier and faster ● The lowest cost per hole drilled Solid cobalt steel drill bit body can be resharpened ● Split