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Carmex Carbide Tiny Tool - Boring Bar - MTR - TNX Grade - 3.1mm Minimum Diameter x 10mm Reach x R0.05
SKU:MTR3R0.05L10TNX
The Carmex Carbide Tiny Tool—Boring Bar, MTR, TNX Grade—is a compact solid carbide bar built for precision boring and light turning in tight spaces. With a minimum diameter of 3.1 mm, a reach of ...
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Specification
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| Application | Boring (MTR) |
| Minimum Diameter | 3.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.05 |
| Grade | TNX |
| Holder | SIM****H3 |
£21.70
Prices shown ex. VAT
5 days estimated lead time
— subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Learn more about Klarna
The Carmex Carbide Tiny Tool—Boring Bar, MTR, TNX Grade—is a compact solid carbide bar built for precision boring and light turning in tight spaces. With a minimum diameter of 3.1 mm, a reach of 10 mm, and a nose radius of R0.05, it delivers accurate starts and clean holes even in confined bores.
- Tiny-diameter, long-reach geometry: Designed for precision work in restricted bores and hard-to-reach features, this bar maintains stable geometry and consistent hole quality across small-diameter applications.
- Coated options for versatility: Choose between BXC TiN coating for low cutting speeds and stainless steels (ISO P30–P50 / K25–K40) or BMK with a sub-micron, triple-coated finish for high heat resistance and smooth cutting across materials (ISO K10–K20).
- Solid carbide durability with TNX grade: The TNX-grade carbide delivers reliable wear resistance and stable cutting performance, reducing tool wear and supporting longer, more productive runs in demanding materials.
This tiny boring bar is built to enhance your workflow with dependable performance in both boring and general turning tasks. The combination of precise geometry, robust carbide material, and versatile coating options helps you achieve consistent hole quality, minimize downtime, and complete projects with greater confidence—whether in a shop floor setting, a production line, or a DIY workstation.
| Application | Boring (MTR) |
| Minimum Diameter | 3.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.05 |
| Grade | TNX |
| Holder | SIM****H3 |
| L | 39 |
| F | 1.3 |
| D | 3 |
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.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Full Range: Carmex Carbide Tiny Tools - Boring Bars - TNX Grade (MTR)
View full collection →You are viewing MTR3R0.05L10TNX. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Reach | Radius | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTR7R0.2L22TNX | 7.1 | 22 | 0.2 | TNX | SIM****H7 | £30.43 | 5 days | |
| MTR5R0.2L15TNX | 5.1 | 15 | 0.2 | TNX | SIM****H5 | £24.55 | 5 days | |
| MTR4R0.2L22TNX | 4.1 | 22 | 0.2 | TNX | SIM****H4 | £25.25 | 5 days | |
| MTR4R0.2L30TNX | 4.1 | 30 | 0.2 | TNX | SIM****H4 | £28.60 | 5 days | |
| MTR3R0.1L10TNX | 3.1 | 10 | 0.1 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTR6R0.2L35TNX | 6.1 | 35 | 0.2 | TNX | SIM****H6 | £34.68 | 5 days | |
| MTR8R0.2L35TNX | 8.1 | 35 | 0.2 | TNX | SIM****H8 | £36.45 | 5 days | |
| MTR2.5R0L10TNX | 2.5 | 10 | 0 | TNX | SIM****H4 | £21.70 | 5 days | |
| MTR2R0.05L5TNX | 2.1 | 5 | 0.05 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTR5R0.1L22TNX | 5.1 | 22 | 0.1 | TNX | SIM****H5 | £28.00 | 5 days | |
| MTR5R0.2L30TNX | 5.1 | 30 | 0.2 | TNX | SIM****H5 | £31.80 | 5 days | |
| MTR3R0.05L15TNX | 3.1 | 15 | 0.05 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTR3R0.1L15TNX | 3.1 | 15 | 0.1 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTR4R0.2L15TNX | 4.1 | 15 | 0.2 | TNX | SIM****H4 | £24.05 | 5 days | |
| MTR5R0.2L22TNX | 5.1 | 22 | 0.2 | TNX | SIM****H5 | £28.00 | 5 days | |
| MTR7R0.2L30TNX | 7.1 | 30 | 0.2 | TNX | SIM****H7 | £33.73 | 5 days | |
| MTR3R0.05L10TNX Viewing | 3.1 | 10 | 0.05 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTR6R0.2L30TNX | 6.1 | 30 | 0.2 | TNX | SIM****H6 | £32.25 | 5 days | |
| MTR6R0.2L15TNX | 6.1 | 15 | 0.2 | TNX | SIM****H6 | £25.30 | 5 days | |
| MTR8R0.2L15TNX | 8.1 | 15 | 0.2 | TNX | SIM****H8 | £30.33 | 5 days | |
| MTR8R0.2L22TNX | 8.1 | 22 | 0.2 | TNX | SIM****H8 | £34.25 | 5 days | |
| MTR2R0.05L10TNX | 2.1 | 10 | 0.05 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTR6R0.2L22TNX | 6.1 | 22 | 0.2 | TNX | SIM****H6 | £28.60 | 5 days | |
| MTR5R0.1L15TNX | 5.1 | 15 | 0.1 | TNX | SIM****H5 | £24.58 | 5 days | |
| MTR1R0.05L4TNX | 1 | 4 | 0.05 | TNX | SIM****H3 | £23.90 | 5 days | |
| MTR2R0.15L5TNX | 2.1 | 5 | 0.15 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTR4R0.05L15TNX | 4.1 | 15 | 0.05 | TNX | SIM****H4 | £24.05 | 5 days | |
| MTR4R0.1L22TNX | 4.1 | 22 | 0.1 | TNX | SIM****H4 | £25.25 | 5 days | |
| MTR2R0.15L10TNX | 2.1 | 10 | 0.15 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTR4R0.2L10TNX | 4.1 | 10 | 0.2 | TNX | SIM****H4 | £22.23 | 5 days | |
| MTR2R0.1L15TNX | 2.1 | 15 | 0.1 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTR3R0.2L15TNX | 3.1 | 15 | 0.2 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTR6R0.1L15TNX | 6.1 | 15 | 0.1 | TNX | SIM****H6 | £25.30 | 5 days | |
| MTR3R0.2L10TNX | 3.1 | 10 | 0.2 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTR4R0.1L15TNX | 4.1 | 15 | 0.1 | TNX | SIM****H4 | £24.05 | 5 days | |
| MTR1.5R0.1L6TNX | 1.5 | 6 | 0.1 | TNX | SIM****H3 | £23.90 | 5 days | |
| MTL1.5R0.1L6TNX | 1.5 | 6 | 0.1 | TNX | SIM****H3 | £23.90 | 5 days | |
| MTL1R0.05L4TNX | 1 | 4 | 0.05 | TNX | SIM****H3 | £23.90 | 5 days | |
| MTL2.5R0L10TNX | 2.5 | 10 | 0 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTL2R0.05L10TNX | 2.1 | 10 | 0.05 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTL2R0.05L5TNX | 2.1 | 5 | 0.05 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTL2R0.15L10TNX | 2.1 | 10 | 0.15 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTL2R0.15L5TNX | 2.1 | 5 | 0.15 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTL2R0.1L15TNX | 2.1 | 15 | 0.1 | TNX | SIM****H3 | £22.78 | 5 days | |
| MTL3R0.05L10TNX | 3.1 | 10 | 0.05 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTL3R0.05L15TNX | 3.1 | 15 | 0.05 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTL3R0.1L10TNX | 3.1 | 10 | 0.1 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTL3R0.1L15TNX | 3.1 | 15 | 0.1 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTL3R0.2L10TNX | 3.1 | 10 | 0.2 | TNX | SIM****H3 | £21.70 | 5 days | |
| MTL3R0.2L15TNX | 3.1 | 15 | 0.2 | TNX | SIM****H3 | £23.58 | 5 days | |
| MTL4R0.05L15TNX | 4.1 | 15 | 0.05 | TNX | SIM****H4 | £24.08 | 5 days | |
| MTL4R0.1L15TNX | 4.1 | 15 | 0.1 | TNX | SIM****H4 | £24.08 | 5 days | |
| MTL4R0.1L22TNX | 4.1 | 22 | 0.1 | TNX | SIM****H4 | £25.25 | 5 days | |
| MTL4R0.2L10TNX | 4.1 | 10 | 0.2 | TNX | SIM****H4 | £22.23 | 5 days | |
| MTL4R0.2L15TNX | 4.1 | 15 | 0.2 | TNX | SIM****H4 | £24.08 | 5 days | |
| MTL4R0.2L22TNX | 4.1 | 22 | 0.2 | TNX | SIM****H4 | £25.25 | 5 days | |
| MTL4R0.2L30TNX | 4.1 | 30 | 0.2 | TNX | SIM****H4 | £28.60 | 5 days | |
| MTL5R0.1L15TNX | 5.1 | 15 | 0.1 | TNX | SIM****H5 | £24.58 | 5 days | |
| MTL5R0.1L22TNX | 5.1 | 22 | 0.1 | TNX | SIM****H5 | £28.00 | 5 days | |
| MTL5R0.2L15TNX | 5.1 | 15 | 0.2 | TNX | SIM****H5 | £24.53 | 5 days | |
| MTL5R0.2L22TNX | 5.1 | 22 | 0.2 | TNX | SIM****H5 | £28.00 | 5 days | |
| MTL5R0.2L30TNX | 5.1 | 30 | 0.2 | TNX | SIM****H5 | £31.80 | 5 days | |
| MTL6R0.1L15TNX | 6.1 | 15 | 0.1 | TNX | SIM****H6 | £25.30 | 5 days | |
| MTL6R0.2L15TNX | 6.1 | 15 | 0.2 | TNX | SIM****H6 | £25.30 | 5 days | |
| MTL6R0.2L22TNX | 6.1 | 22 | 0.2 | TNX | SIM****H6 | £28.60 | 5 days | |
| MTL6R0.2L30TNX | 6.1 | 30 | 0.2 | TNX | SIM****H6 | £32.25 | 5 days | |
| MTL6R0.2L35TNX | 6.1 | 35 | 0.2 | TNX | SIM****H6 | £34.68 | 5 days | |
| MTL7R0.2L22TNX | 7.1 | 22 | 0.2 | TNX | SIM****H7 | £30.43 | 5 days | |
| MTL7R0.2L30TNX | 7.1 | 30 | 0.2 | TNX | SIM****H7 | £33.73 | 5 days | |
| MTL8R0.2L15TNX | 8.1 | 15 | 0.2 | TNX | SIM****H8 | £30.33 | 5 days | |
| MTL8R0.2L22TNX | 8.1 | 22 | 0.2 | TNX | SIM****H8 | £34.25 | 5 days | |
| MTL8R0.2L35TNX | 8.1 | 35 | 0.2 | TNX | SIM****H8 | £36.45 | 5 days |
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