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.

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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"

Product ID: 454376067

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Details

Material
High Carbon
Cutting Diameter
0.25 Inches
Finish Type
Titanium
Shank Type
Straight
Cutting Angle String
135 Degrees

🔩13Pcs Set

⚙️M35 Alloy

🛠️135° Tip

Description

🔧 Drill Your Way to Perfection!

COMPREHENSIVE SET - Includes 13 versatile sizes for all your drilling needs, neatly stored.
DURABLE CONSTRUCTION - Crafted from M35 alloy for superior wear resistance and longevity.
PRECISION ENGINEERING - Experience unmatched accuracy with our precision-ground drill bits.
FAST CUTTING TECHNOLOGY - 135° split point design ensures quick penetration with minimal pressure.
UNIVERSAL COMPATIBILITY - Designed to fit a variety of tool holding systems effortlessly.

The 13Pcs Cobalt Drill Bits Set features high-speed steel construction with 5% cobalt for enhanced durability. With a 135-degree split point for fast cutting and a comprehensive range of sizes, this set is perfect for professionals tackling hardened metals, plastics, and wood. Comes with a convenient storage case and a satisfaction guarantee.

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