Product Guides
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Parabolic Flute vs. TiN Coating: Two Separate Decisions (And When You Need Both)
The assumption buyers make A gold-colored drill bit gets read as “the upgraded one.” That's not an unreasonable guess — gold-finish TiN coating does show up more often on higher-spec lines. But color only tells you one thing: whether...Read more -
Chip Breaker, M35 Cobalt, and a Tri-Flat Shank: What Three Design Choices Actually Solve When Drilling Stainless Steel
Stainless steel drilling problems usually show up as three separate complaints: chips wrapping around the flute and jamming the hole, the shank spinning inside the chuck under load, and the edge going dull faster than expected. Most buyers treat these as three unrelated ...Read more -
HSS-Co M35 Spot Weld Drill Bits: How to Remove Automotive Spot Welds Without Damaging the Lower Panel
In automotive body repair, one of the most common mistakes technicians make when separating panels is reaching for a standard twist drill. The result is almost always the same: the bit punches straight through both layers of sheet metal, leaving the lower panel damaged a...Read more -
DIN 333 Type A vs. Type B Center Drills: How to Choose the Right One
When engineers and buyers specify a DIN 333 center drill, one of the most common questions we receive is: "What's the difference between Type A and Type B — and which one do I actually need?" It's a fair question. Both types share the same 60° chamfer angle, follow the s...Read more -
What Are M42, M35, and M2 HSS Drill Bits? A Practical Guide to Choosing the Right Grade
When buyers ask us about HSS drill bits, one of the most common questions is: "What's the difference between M42, M35, M2 — and what about 4341?" It's a fair question. All of them are high-speed steel (HSS) materials, and on the surface, they look nearly identical. But t...Read more -
What Are Double-Ended Drill Bits?
Introduction In metal fabrication and industrial drilling, tool life and procurement cost are two of the most critical factors for buyers. Double-ended drill bits — also known as reversible drill bits or twin-point drill bits — offer...Read more -
Our New One-Piece Solid Hex Shank HSS Drill Bits
Jiacheng Tools is proud to announce a new product for the global market. We now offer a new One-Piece Solid Hex Shank HSS Twist Drill Bit. This tool is perfect for professional workers who use electric drills and impact drivers. We designed this product to be stronger an...Read more -
New M35 Parabolic Drill Boosts Drilling Efficiency by 2×
Jiacheng Tools, as a professional manufacturer of high-speed steel (HSS) cutting tools, excitedly to share our new innovation — the M35 Parabolic Drill Bit, designed for higher efficiency, precision, and durability in metal drilling applications. ...Read more -
Our Star Product: Pilot Point Drill Bits
At Jiacheng Tools, we focus on making stable high-quality cutting tools for our clients. We believe choosing the right drill bit is very important. It can affect the result of your whole project, no matter how big or small. ...Read more