These work pretty well as a general bit set for drilling most metals? Is applying oil generally needed on a surface when drilling?

While in trade school many decades ago, they taught us to use cooling for chisels and drill bits, I did dry drilling many times throughout the years, it works; however, cooling will extend the life of the drill bit for sure. One online resource said the following: If you don't cool, the material will harden and the drilling will get tougher. With special cutting oil, you cool both the material and the drill. This makes the drilling faster and more effective. The drill bits also last longer, because they stay sharp. Hope that this answers your question.

Are cobalt bits better than titanium bits?

Yes. Cobalt is harder and can drill through harder materials such as stainless steel.

Is the entire bit comprised of the M35 5% cobalt alloy or is the high cobalt steel just on the surfaces?

The entire bit is comprised of the M35 5% cobalt alloy. That is why they should last longer.

Will this fit in a standard household drill?

Our goal is to provide our customers with the highest quality and service. Yes this M35 HSS Drill Bit will fit just be mindful that this is a straight shank bit.

13Pcs Cobalt Drill Bits Set, M35 HSS 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Storage Case 1/16"-1/4"

13Pcs Cobalt Drill Bits Set, M35 HSS 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood with Storage Case 1/16"-1/4"

产品编号: 625642623

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细节

Cutting angle string
135 Degrees
Cutting diameter
0.25 Inches
Finish type
High Speed
Material
High Carbon
Shank type
Straight

🎯135° Split Point - precise, fast, no walking

🧰13 Sizes - 1/16" to 1/4" in organized case

⚙️M35 Cobalt Alloy - 5% Cobalt for max durability

描述

🔩 Drill Like a Pro, Finish Like a Boss!

UNMATCHED DURABILITY - M35 high-speed steel with 5% cobalt resists wear and heat for longer life.
VERSATILE SIZE RANGE - 13 drill bits from 1/16" to 1/4" cover all your metal, wood, and plastic projects.
PRECISION CUTTING EDGE - 135° split point design ensures quick, centered drilling with minimal walking.
EFFORTLESS CHIP REMOVAL - Twist flute design clears debris fast, keeping your workflow smooth and efficient.
COMPACT STORAGE SOLUTION - Durable plastic case keeps your bits organized and ready for any job on the go.

This 13-piece M35 cobalt drill bit set features premium 5% cobalt high-speed steel with a 135° split point for precision and durability. Designed for hardened metals, stainless steel, cast iron, plastic, and wood, it offers a versatile size range from 1/16" to 1/4" in a convenient storage case—perfect for professionals and DIYers demanding clean, fast, and reliable drilling performance.

规格

ASIN	B0B5R8P9ST
Best Sellers Rank	1,054,093 in DIY & Tools ( See Top 100 in DIY & Tools ) 8,227 in Drill Bit Sets
Brand	GMTOOLS
Customer Reviews	4.4 4.4 out of 5 stars (2,363)
Cutting Angle String	135 Degrees
Cutting Diameter	0.25 Inches
Finish Types	High Speed Steel,Stainless Steel,Steel
Manufacturer	GMTOOLS
Material	High Carbon Steel
Number of Flutes	2
Point Style	Split Point
Shank Type	Straight
Surface Recommendation	Metal, Plastic, Wood
Tool Flute Type	Spiral
Unit Count	1.0 count

K**T

So far so good. Broke my original one and bought these. They drill nicely through stainless steel and I've only been using the 1 so far for a bunch of stainless holes.

10.03.2026

L**E

working well for the few things I've used them for so far. cut quickly and cleanly. nice metal box to keep them in and organized as well.

4.02.2026

E**O

Increíblemente buenas, un excelente filo las e probado en aceros tratados y sin problema perforan, recomendado al 100%

23.08.2025

T**Y

Nice, inexpensive set of drill bits. They're not very long, so make sure you know what you're getting. They're nice to have as replacements for others that I have broken so they fit my need perfectly. I'm not expecting to drill through diamonds with them...

3.02.2026

L**U

Very impressive with quality of the product. Drilled a lot of holes on the struts for a week already and they’re still very sharp.

11.02.2026

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2 个月前

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关税和税费包括

Malaysia店铺

免费退货

30天对于 PRO 会员用户

15天无会员资格

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TrustScore 4.5 | 7,300多个评论

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3 周前

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