TBII TBII
Sign In Register
Navigation
Home My Cart Shop
Language
🇨🇦 English 🇫🇷 Français 🇪🇸 Español 🇩🇪 Deutsch 🇨🇳 中文 (简体) 🇯🇵 日本語 🇰🇷 한국어
Help
Contact FAQ
© 2026 TBII. All rights reserved.
Best-Selling New In

M35 HSS-CO 5% Cobalt Twist Drill Bit Set Metric Straight Shank Set With Metal Case For Stainless Steel Wood Metal Drilling

$39.32 Reference price: $62.27 Save 37%
Qty:

  • Fast delivery
  • 30-day returns
Ships to Canada · Delivery Varies by item and destination
Sold by TBII
Category DIY, Tools & Hardware › Tools & Equipment › Power Tools In stock Ships to Canada Estimated Delivery Varies by item and destination

Product details

Brand Nameconboom
TypeTwist Drill Bit
Model Number13/19/25Pcs

Descriptions:

M35 Cobalt Drill Bit Set HSS-Co Length Twist Drill Bits with Metal Case for Stainless Steel Wood Metal Drilling


Specification:

Brand

Conboom

Product name

M35 Cobalt Twist Drill Bits Set

Material

HSS-Co M35 Cobalt

Size (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, 6.5 mm

19PCS:1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0mm

25PCS:1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0mm

Measurement System

Metric

Shank Type

Straight Shank

Quantity

13/19/25PCS + Metal Case


Diameter (mm)

Total length (mm)

Working length (mm)

Suggested RPM

1

34

12

3000

1.5

39

17

2400

2

48

22

1800

2.5

55

30

1600

3

62

33

1400

3.5

69

38

1200

4

74

44

1000

4.5

79

48

900

5

86

52

800

5.5

93

58

750

6

93

58

700

6.5

100

64

650

7

109

70

600

7.5

109

70

550

8

116

75

500

8.5

116

75

450

9

125

83

400

9.5

125

83

325

10

133

90

350


Note:

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-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.

 
 
Notes:
1. The drill can drill stainless steel, but processing stainless steel and other high hardness of the workpiece, it is recommended to be fixed on the drilling machine or platform type machine, the use of electric hand drill is prohibited, because the artificial use of electric hand drill is easy to shake, resulting in insufficient processing accuracy Or the bit gets dull or even breaks.
 
2. The bit and the workpiece to be processed must be fixed or clamped. Generally, the rotational speed is less than 2000RPM. The larger the diameter of the drilling hole, the lower the rotational speed.
 
The harder the material is, the slower the speed is required, and the more durable the cutting fluid is recommended.
 
3. Can dry cut stainless steel and other high hardness metal, but continuous uninterrupted work is best to add water or coolant cooling, prolong the life of the product.

Package included:

13 / 19 / 25PCS

M35 Cobalt Drill Bit Set

1PC

Metal Case


CategoryDIY, Tools & Hardware › Tools & Equipment › Power Tools
Availability In stock
Ships toCanada
Buyer Guarantees15-Day No Update Refund & 60-Day No Delivery Refund

No reviews yet

Be the first to share what you think of this product.

Fast Delivery Nationwide shipping
Best Price Guarantee We'll match any price
Easy 30-Day Returns No questions asked
Secure Checkout 256-bit SSL encrypted