Drillpro 13/19/25 PCS HSS 1-13mm Drillpro M35 Bit Set Cobalt Twist Drill Bit

Description M35 cobalt 5 cobalt added for added hardness and heat resistance Rockwell hardness is up to 67 It can cut faster and has a long life up to 12 times compared to the average HSS bit Self centering The 135 ° cutting guide gap is self centering which can penetrate quickly with less pressure The straight shank can be fixed firmly and precisely centered which is suitable for standard chuck and conventional round chuck Efficient drilling without walking Remove chips and particles easier and faster Lowest cost per hole drilled The solid cobalt steel bit body can be re sharpened Split point Drill directly to size without pre drillingFully ground Fully rugged ground body construction for minimal burr and accurate diameter Drill bits for metal Suitable for drilling non heat treated metals whose hardness is lower than HRC38 such as stainless steel copper cast iron galvanized pipe iron and aluminum alloy Not suitable for mild steel high carbon steel If penetration is not possible try adjusting the speed Note Cobalt bits require slow RPM when drilling metals Suggested RPMs are for your reference only It can vary from different materials You can start from a lower RPM and adjust it more slowly Once the bit can enter the workpiece Adjustment should be stopped SpecificationBrandDrillproProduct nameDrillpro M35 Bit Set Cobalt Twist DrillMaterialHss co M35 cobaltSize optional 13pcs 1 5 2 0 2 5 3 0 3 2 3 5 4 0 4 5 4 8 5 0 5 5 6 0 6 5mm19pcs