HSS-Co M35 Cobalt Drill Bit Set – 51 pcs, 1–6 mm, Metal Case

A standard drill bit turns black and stalls in stainless steel.

In hard metal, ordinary HSS steel overheats and goes blunt. The bits in this set are made from M35 cobalt high-speed steel (HSS-Co), which copes far better with stainless steel and hard metals.

Why it works

• HSS-Co M35 — withstands higher temperatures while drilling.
• 51 bits from 1 to 6 mm — you've got the size you need, plus spares of the thin ones that break most often.
• Metal case — every bit in its place.
• Versatile — for metal, stainless steel, aluminium, wood and plastic.

What you miss out on without it

• You dash to the shop for one 3.5 mm bit halfway through a job.
• You burn through bits in stainless steel and never finish the hole.

Where it comes in handy

DIY around the house, metal profiles and hinges, stainless bathroom fittings, car repairs, the workshop.

Specifications

Good to know

• In metal, drill at low speed with cutting fluid — that's how the bits last longest.
• Not for concrete or brick — use carbide-tipped masonry bits and hammer mode for those.