Meccion HSS Cobalt Jobber Drill Bits (5 pcs) 5.0mm twist drill for metal and stainless steel

If you regularly drill through metal, the bit you choose really does affect how clean and controlled the hole feels. The Meccion HSS Cobalt Jobber Drill Bit set is built around a cobalt HSS blank and a 135° self-centring tip, so it’s aimed at drilling stainless steel and a wider range of common workshop materials with less fuss.

That said, it’s still a practical set for day-to-day jobs rather than a magical replacement for correct technique, suitable feeds/speeds, and the right cutting oil. If you’re comfortable setting up your work properly, this is the kind of kit that can make the process smoother.

What it is and what it’s for

This is a 5-piece set of HSS (high-speed steel) cobalt jobber twist drill bits, sized at 5.0mm. Twist drill bits are the go-to style for general metal drilling because they remove swarf efficiently and are versatile enough for many workshop tasks.

On paper, the headline here is the use of 5% cobalt high-speed steel, plus a 135° self-centring tip. In everyday terms, that points to easier starting—less wandering—when you’re drilling plate, sheet, or parts where you can’t be bothered with pre-punching every time.

Key takeaways

Where this set stands out is its “start and drill” approach: precision ground bits, a self-centring tip, and a hard-wearing HRC63–64 hardness claim. It’s also designed for drilling metals and tougher mixed materials, including stainless steel and cast iron.

However, you’ll want to match expectations to the tool’s role. It can help you drill without pre-drilling or pre-punching in many situations, but if your workpiece is very thin, awkward to clamp, or you don’t use cutting oil, results can still vary. Quality of setup matters as much as the bit.

What to expect when drilling

The most noticeable “feel” with jobber bits is how they start, how they pull through, and how quickly they dull. This set is described as precision ground, designed to deliver fast drilling with low contact force, and the tip geometry is meant to centre itself as you begin.

A practical example: if you’re drilling a 5.0mm hole in stainless steel for a basic fixture, you can place the bit at your mark, apply cutting oil, start slowly so the tip bites cleanly, then keep a steady feed as the twist flutes clear swarf. With a self-centring tip, you may spend less time chasing the mark before the hole takes.

Strengths worth paying for

A few details suggest this set is aimed at durability and consistency rather than being purely “cheap and cheerful”:

• The bits are made from high-speed steel with 5% cobalt.
• The tip is specified as 135° and self-centring.
• The bits are described as heat-treated (high temperature quenching) with hardness claimed up to HRC63–64.
• It’s positioned as wear-resistant, with guidance to use cutting oil for longer service life.

If your workflow involves repeated drilling into metal, those points are exactly the sort of thing that can help bits last longer and behave more predictably.

Where it may not be the best match

It’s not a one-size-fits-all answer for every drilling scenario. You may want to skip it if you:

• Are expecting zero need for clamping and correct technique. The bit can be self-centring, but the workpiece still needs to be held securely.
• Don’t want to use cutting oil. The manufacturer guidance specifically points to cutting oil for longer service life.
• Need a bit size or format outside what’s offered here (this set is specifically 5.0mm, and comes as 5 pieces).

Also, while it’s said to work across many materials, “worked on most material” is broad—so for very specialised jobs, you’d still want to double-check you’re using the right bit type and process for that material thickness and hardness.

Tech specs

• Type: Twist drill bit (jobber style)
• Name: HSS cobalt drill bit set
• Format: 5-piece set
• Size: 5.0mm
• Tip angle: 135° self-centring tips
• Material: High-speed steel with 5% cobalt
• Standard: DIN 338 (as stated)
• Hardness claim: up to HRC63–64

Is it worth it?

It makes sense to buy this Meccion 5.0mm HSS cobalt jobber bit set if you want a cobalt HSS option for drilling metal and stainless steel where starting cleanly matters, and you’re willing to use cutting oil and good drilling setup.

It may not be the best choice if you’re trying to avoid oil and careful technique, or if you need a different size/bit format for a specific task. In most everyday workshop use-cases—general fabrication, repair work, and drilling metal parts—this looks like a sensible middle-ground kit where the tip design and cobalt steel formulation are doing real work.

Mini FAQ

Does it need pre-punching or pre-drilling?

The description says it’s designed for fast drilling without pre-punching or pre-drilling, but results depend on your setup and how you start the hole.

What materials is it meant for?

It’s stated to work on metals including stainless steel and cast iron, plus alloy steel, hard plastics and wood (as listed).

Will it last without cutting oil?

Cutting oil isn’t optional in the manufacturer guidance if you want longer service life. Without it, wear may be faster.

What does jobber style mean here?

Jobber twist drill bits are the standard general-purpose twist format commonly used for drilling through metal with a straight flute design for swarf removal.

Is 5.0mm a common choice?

It’s a practical workshop size, but whether it fits your project depends entirely on the hole size you’re working to.