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Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade - 2.1mm Minimum Diameter x 10mm Reach x R0.1 (Left Hand)
| Application | Boring (MTL) |
| Minimum Diameter | 2.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.1 |
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The Carmex Carbide Tiny Tool - Boring Bar for MTL is a compact, high-precision solid carbide bar designed for micro-bore work and fine turning. Suitable for engineers, machinists, buyers, and hobbyists, it delivers clean holes and smooth finishes in tight spaces where larger bars can’t reach. With a 2.1 mm minimum diameter, 10 mm reach, and a left-hand orientation, this tiny tool combines accessibility with robust cutting performance.
- Compact, precise geometry for tiny bores: The 2.1 mm minimum diameter, 10 mm reach, and R0.1 nose radius enable accurate hole creation in confined spaces with reduced tool deflection and better surface finishes.
- K20 solid carbide with coated options: Made from high-hardness K20 carbide and available with protective PVD coatings (TiN or triple-coated BMK) to improve wear resistance, heat handling, and consistent cutting across demanding small-diameter applications.
- Versatile for boring and general turning: Primed for boring yet capable of handling a wide range of turning tasks, helping you complete multiple operations with a single tool and minimize tool changes.
This tiny tool is designed to stay productive over long runs: the hard carbide core resists wear on stainless steels and other materials, while the coatings reduce friction and heat buildup for steadier cutting at the speeds appropriate for fine-diameter work. The combination of compact size, precise geometry, and durable construction supports reliable, repeatable results and a smoother workflow when machining small components or deep bores.
Part Numbers
- Protool Part Number
- MTL2R0.1L10K20
- Brand
- Carmex
- Category
- Tiny Tool Inserts
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.



