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FREE next working day delivery on all orders over £50
Our warehouse situated in Wigan, houses over 1,000,000 drill bits ready for same day dispatch nationwide!
Hardened Steel
Unsure What You’re Up Against?
If you're not sure how hard the steel is, start with cobalt. If that fails, step up to TCT. And as always - if in doubt, ask us.HSS & Cobalt
Cobalt drill bits are the best all-round choice for hardened or stainless steels. Made with 5% cobalt alloy for high heat resistance and longer edge retention. Run slow, use steady pressure, and keep the bit cool for best results. HSS drill bits are not recommended for hardened steel - most will burn out or fail quickly. Only use on very light-duty work or if drilling into already-softened edges.
TCT
Tungsten carbide-tipped bits for when cobalt isn’t enough. Ideal for extreme materials like high-tensile fasteners, hardened bolts, and heavy-duty security plates. Often used by locksmiths, fabricators, and engineers. Requires precision and care.
HELP - Want to know the difference between SDS plus and SDS max, watch our short video below to ensure you pick the correct drill bit!
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Trusted
Selling Drill bits for 40+ years Established in Wigan in 1985
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Our Guarantee
100% satisfaction guaranteed or your money back
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Fulfilment
Over 1,000,000 items in stock & our same day dispatch promise
