M35 High-Speed ​​Steel Cobalt Drill Bit Set, Twisted Tips, Metric Metal Case for Drilling Wood, Stainless Steel

The suggested RPM is for your reference only.This may vary depending on the material.You can start at a lower RPM and slowly increase it.Once the drill bit can enter the workpiece,the setting should be stopped.
Features: ● Cobalt M35.5% cobalt added for higher hardness and heat resistance.Rockwell hardness is up to 67.Cuts faster and has a longer life, up to 12 times longer than the average HSS drill bit. ● Self-centering. The 135° cutting guide separation point is self-centering, allowing for quick penetration with less pressure.The straight handle can be firmly fixed and precisely centered, making it suitable for standard and conventional round chucks. ● Efficient drilling without walking.Easier and faster chip and particle removal ● Lowest cost per hole drilled.The solid cobalt steel drill bit body can be sharpened. ● Slotted point.Drills directly to the required size without pre-drilling. ● Fully ground.Robust, fully ground construction for minimal burrs and precise diameter. ● Bits for metal.Suitable for drilling unheat-treated metals with a hardness below HRC38, such as stainless steel, copper casting, galvanized pipes, iron, and aluminum alloy.Not suitable for hardened steel/high-carbon steel.If penetration is not possible, try adjusting the speed.

Package includes:
13/19/25 PCS M35 Cobalt Drill Bit Set
1 PC Metal Case
More details:

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