HSS Blacksmith Reduced Shank Drills Metric Sizes

If you’ve ever drilled through thick steel or stubborn timber, you know not every bit can take the pressure. That’s where Rennie Tool’s HSS Blacksmith Reduced Shank Drills come in. They’re made for jobs that need strength, accuracy, and a bit of muscle without needing fancy equipment.

Each bit is crafted from high-speed steel (HSS), a material known for staying sharp even under heat. And with a 12.7mm (½”) reduced shank, these drills fit into standard chucks even when the cutting diameter is much bigger. So, you can work on larger holes using the same drill you already have.

They’re manufactured to DIN338 and BS328 standards, meaning you can expect consistent quality and smooth performance every time.

What Are Blacksmith Drill Bits?

The term blacksmith drill bit goes back a long way. Traditionally, blacksmiths used them to bore big, tough holes through metal. The name stuck, and the design evolved.

A blacksmith drill bit has a large cutting size with a smaller shank, which makes it easier to use in standard drills. That’s the real advantage: you get the power of a heavy-duty bit without needing a large industrial chuck.

In short, it’s a bit made for hard work but accessible to anyone – from workshop pros to home DIYers.

What Is a Reduced Shank Drill Bit?

A reduced shank drill bit is exactly what it sounds like. The end that fits into your drill is smaller than the cutting end. This simple feature makes a huge difference in how versatile the tool is. It allows you to drill bigger holes using smaller drills, without needing adaptors. So even if your drill has a standard ½" chuck, you can still work with bits up to 40mm in size.

That’s why they’re popular with fabricators, engineers, and anyone who wants flexibility from one tool.

Why Choose Rennie Tool HSS Blacksmith Drills?

These bits are built for the kind of work where precision and toughness both matter. Here’s what makes them a smart buy:

• High-Speed Steel (HSS): Keeps its edge sharp and performs well even on hard materials.
• ½" Reduced Shank: Fits most handheld and bench drills without any modification.
• Accurate and Durable: Manufactured to DIN338 and BS328 standards for consistent performance.
• Balanced Design: Each bit is 150mm long with a flute length between 76–80mm – ideal for steady drilling.
• Clean Cutting: Efficient flute design clears debris quickly, helping the bit stay cooler while cutting.

Made for Everyday Work

Whether you’re drilling into mild steel, wood, or plastic, these HSS blacksmith drill bits handle it with ease. Their tough construction resists heat and dulling, meaning they’ll last longer and need less sharpening.

If you work with a mix of materials – say you’re doing fabrication one day and carpentry the next – you won’t need to switch tools constantly. They’re that adaptable.

They’re also great for plastics and softer materials, cutting smoothly without cracking or melting.

Sizes and Common Uses

Available in metric sizes from 13.5mm to 40mm, they cover everything from medium to large bore holes. Whether you’re setting up fixtures, building frames, or doing vehicle repairs, there’s a size that fits.

You’ll find them useful for:

• Metal fabrication and repair work
• Construction and joinery
• General workshop maintenance
• Automotive and mechanical jobs
• DIY and home improvement projects

If you regularly drill into harder metals like stainless steel or high-alloy steel, check out our Cobalt Blacksmith Drill range – made for extra durability and heat resistance.

Quality You Can Count On

At Rennie Tool, we keep things simple – tools that work, prices that make sense, and service you can rely on. Our HSS Blacksmith Reduced Shank Drills are made for people who use their tools daily and expect them to last.

They deliver clean, accurate holes without wobble or chatter. Whether you’re on the job or fixing something at home, they’re the kind of bits that make you wonder how you managed before.

Order today for fast UK delivery and add a tool to your kit that’ll stand up to years of use.