Are most of these reviews fake? 50 real cobalt bits for $15 is impossible.

We swear every review in our store is real. Our living relies on this account. We'll never risk making fake reviews, or it might be closed by Amazon. Pay attention to the size. These bits are small. The 1mm is like a needle. You guys paid extra too much for those famous brands before. Selling it at $15 is profitable for us.

is the drill bits pure cobalt?

Thanks for your question. Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with 5 to 8 percent cobalt. The 5-percent alloy is known as M35 grade, and the 8-percent alloy is M42. These bits are made of M35 grade cobalt steel, with 5% cobalt added.

I want to drill 9 to 12 holes through large, stainless steel hinges (3mm thick).Could I do the job with these drills?

Quality of hinge is the variable here. I would buy a single cheap coated drill bit first. If you can drill one hole with the cheap bit, then you should be able to drill 9-12 in the same material with this set. As always use cutting oil and make sure your press is set to proper speed.

What size is the shank on these?

Size of the shank is the same as the size of the drill.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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40-Piece M35 Cobalt Steel Twist Drill Bit Set, Sizes 3/64", 1/16", 5/64", 3/32" (10 Each), Fully Ground HSS-CO Jobber Bits with 118° Point for Stainless Steel, Hard Metal, Cast Iron & Wood

Product ID: 139056833

🔥Heat Resistant

🔩M35 Cobalt Steel

⚙️135° Split Point

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$27.48

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Drill Like a Pro with Unmatched Precision!

METAL MASTERY - Designed specifically for cutting through tough metals like stainless steel and cast iron, making them a must-have for metalworking pros.
USER FRIENDLY GUIDE - Comes with a downloadable user guide featuring RPM charts and drilling tips to enhance your drilling experience.
UNMATCHED DURABILITY - Crafted from M35 cobalt steel, these bits boast a Rockwell hardness of up to 67, ensuring they outlast standard HSS bits by up to 12 times.
VERSATILE SIZE RANGE - Includes 40 precision bits in four essential sizes (3/64, 1/16, 5/64, 3/32) to tackle any project with ease.
PRECISION ENGINEERING - Manufactured to German DIN338 standards, ensuring top-notch quality and performance in every bit.

The HYMNORQ40PC M35 Cobalt Steel Twist Jobber Small Drill Bits set includes 40 high-performance bits designed for metalworking, featuring a Rockwell hardness of up to 67 for exceptional durability. With sizes ranging from 3/64 to 3/32 inches, these bits are perfect for cutting through tough materials like stainless steel and cast iron. Each set comes with a user guide for optimal drilling results.

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