99Pcs M35 Cobalt Drill Bit Set 1.5-10mm HSS-Co Jobber Length Twist Drill Bits with Metal Case for Stainless Steel Wood M

Descriptions 99Pcs M35 Cobalt Drill Bit Set 1 5 10mm HSS Co Jobber Length Twist Drill Bits with Metal Case for Stainless Steel Wood Metal DrillingSpecification Product nameDrillpro 99Pcs M35 Cobalt Twist Drill Bits SetMaterialHSS Co M35 CobaltSize optional 16Pcs x 1 5 mm 16Pcs x2 mm 15Pcs x 2 5mm 10Pcs x 3mm 10Pcs x 3 2mm 8 x 3 5mm 8 x 4mm 3 x 4 5mm 3 x 5mm 2 x 5 5mm 2 x 6mm 2 x 6 5mm 2 x 8mm 2 x 10mmMeasurement SystemMetricShank TypeStraight ShankQuantity99PCS Metal CaseNote 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 point Drill directly to the size needed without pre