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

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


Brand Drillpro 
Product name            Drillpro 99Pcs M35 Cobalt Twist Drill Bits Set  
HSS-Co M35 Cobalt
Size (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 10mm

Measurement System
Shank Type Straight Shank
Quantity 99PCS + Metal Case


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.


● 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-drilling

● Fully ground. Heavy-duty fully ground body construction for minimal burr and accurate diameter.

● Bits for metal. Suitable for drilling non-heat treated metals, of which the hardness is less than HRC38, such as stainless steel, copper cast iron, galvanized pipe, iron, and aluminum alloy. Not suitable for hardened steel / high carbon steel. If penetration is not possible, try adjusting the speed.

Package included:

Drillpro M35 Cobalt Drill Bit Set
1 PC Metal Case

More details:

Shipping information

(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.


(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

Return and exchanges

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

for more information please visit our Refunds & Returns Policy page.