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Carmex Carbide Tiny Tool - Boring Bar - MTL - BMK Grade - 4.1mm Minimum Diameter x 15mm Reach x R0.05 (Left Hand)
| Application | Boring (MTL) |
| Minimum Diameter | 4.1 |
| Reach (L1) | 15 |
| Radius (R) | 0.05 |
| Grade | BMK |
| Holder | SIM****H3 |
Learn more about Klarna
The Carmex Carbide Tiny Tool Boring Bar is a compact, solid carbide solution designed for precise small-diameter bores and dependable general turning. With a 4.1 mm minimum diameter, a 15 mm reach, and left-hand cutting geometry, it’s built to perform in confined spaces while delivering consistent depth control and clean finishes.
This tool line offers two coating grades to match your material and speed needs: the BXC grade, a PVD TiN-coated option optimized for lower cutting speeds and broad stainless-steel compatibility (ISO P30-P50 / K25-K40), and the BMK grade, a sub-micron, triple-coated solution (ISO K10-K20) delivering exceptional heat resistance and smooth cutting across a wide range of materials. This versatility makes it suitable for both specialized boring work and general-purpose turning.
- Two advanced coating grades for versatility: Choose BXC TiN for dependable performance at low speeds on stainless steels, or BMK’s sub-micron, triple PVD coating for maximum heat resistance and smooth, consistent cutting across many materials.
- Compact size with long reach for tight bores: 4.1 mm minimum diameter and 15 mm reach let you access confined pockets while maintaining stable engagement and precise depth control in boring and light turning tasks.
- Durable carbide construction for reliable performance: Solid carbide construction plus engineered coatings support long tool life, smoother cuts, and consistent finishes—ideal for demanding applications across materials including stainless.
Designed to streamline machining workflows, the Carmex Tiny Tool delivers reliable, repeatable results with minimal setup and tool changes. Its combination of compact geometry, coating versatility, and robust carbide construction helps you achieve higher-quality bores, faster cycle times, and improved overall productivity in both professional shops and DIY setups.
| Application | Boring (MTL) |
| Minimum Diameter | 4.1 |
| Reach (L1) | 15 |
| Radius (R) | 0.05 |
| Grade | BMK |
| Holder | SIM****H3 |
| L | 51 |
| F | 1.7 |
| D | 4 |
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.
Full Range: Carmex Carbide Tiny Tools - Boring Bars - BMK Grade (MTR)
View full collection →You are viewing MTL4R0.05L15BMK. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Reach | Radius | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTR1.2R0L7BMK | 1.2 | 7 | 0 | BMK | SIM****H3 | £25.49 | In Stock | |
| MTR1.2R0L9BMK | 1.2 | 9 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR1.5R0.1L6BMK | 1.5 | 6 | 0.1 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR1.5R0L6BMK | 1.5 | 6 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR1R0.05L4BMK | 1 | 4 | 0.05 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR1R0.05L6BMK | 1 | 6 | 0.05 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR1R0L6BMK | 1 | 6 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTR2.5R0.1L10BMK | 2.5 | 10 | 0.1 | BMK | SIM****H4 | £23.17 | 5 days | |
| MTR2.5R0.1L15BMK | 2.5 | 15 | 0.1 | BMK | SIM****H4 | £24.30 | In Stock | |
| MTR2.5R0L10BMK | 2.5 | 10 | 0 | BMK | SIM****H4 | £23.17 | In Stock | |
| MTR2R0.05L10BMK | 2.1 | 10 | 0.05 | BMK | SIM****H3 | £20.98 | In Stock | |
| MTR2R0.05L5BMK | 2.1 | 5 | 0.05 | BMK | SIM****H3 | £24.28 | 5 days | |
| MTR2R0.15L10BMK | 2.1 | 10 | 0.15 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTR2R0.15L5BMK | 2.1 | 5 | 0.15 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTR2R0.1L10BMK | 2.1 | 10 | 0.1 | BMK | SIM****H3 | £24.28 | 5 days | |
| MTR2R0.1L15BMK | 2.1 | 15 | 0.1 | BMK | SIM****H3 | £24.28 | 5 days | |
| MTR2R0L10BMK | 2.1 | 10 | 0 | BMK | SIM****H3 | £24.28 | 5 days | |
| MTR3R0.05L10BMK | 3.1 | 10 | 0.05 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTR3R0.05L15BMK | 3.1 | 15 | 0.05 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTR3R0.1L10BMK | 3.1 | 10 | 0.1 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTR3R0.1L15BMK | 3.1 | 15 | 0.1 | BMK | SIM****H3 | £25.17 | In Stock | |
| MTR3R0.2L10BMK | 3.1 | 10 | 0.2 | BMK | SIM****H3 | £23.17 | In Stock | |
| MTR3R0.2L15BMK | 3.1 | 15 | 0.2 | BMK | SIM****H3 | £25.17 | In Stock | |
| MTR4R0.05L15BMK | 4.1 | 15 | 0.05 | BMK | SIM****H3 | £25.61 | 5 days | |
| MTR4R0.05L22BMK | 4.1 | 22 | 0.05 | BMK | SIM****H4 | £26.86 | 5 days | |
| MTR4R0.1L10BMK | 4.1 | 10 | 0.1 | BMK | SIM****H4 | £23.71 | In Stock | |
| MTR4R0.1L15BMK | 4.1 | 15 | 0.1 | BMK | SIM****H4 | £25.61 | 5 days | |
| MTR4R0.1L22BMK | 4.1 | 22 | 0.1 | BMK | SIM****H4 | £26.89 | In Stock | |
| MTR4R0.2L10BMK | 4.1 | 10 | 0.2 | BMK | SIM****H4 | £23.71 | 5 days | |
| MTR4R0.2L15BMK | 4.1 | 15 | 0.2 | BMK | SIM****H4 | £25.63 | 5 days | |
| MTR4R0.2L22BMK | 4.1 | 22 | 0.2 | BMK | SIM****H4 | £26.89 | In Stock | |
| MTR4R0.2L30BMK | 4.1 | 30 | 0.2 | BMK | SIM****H4 | £30.48 | 5 days | |
| MTR5R0.05L15BMK | 5.1 | 15 | 0.05 | BMK | SIM****H5 | £26.20 | 5 days | |
| MTR5R0.1L15BMK | 5.1 | 15 | 0.1 | BMK | SIM****H5 | £26.22 | 5 days | |
| MTR5R0.1L22BMK | 5.1 | 22 | 0.1 | BMK | SIM****H5 | £29.89 | 5 days | |
| MTR5R0.1L30BMK | 5.1 | 30 | 0.1 | BMK | SIM****H5 | £33.92 | In Stock | |
| MTR5R0.2L10BMK | 5.1 | 10 | 0.2 | BMK | SIM****H5 | £26.20 | 5 days | |
| MTR5R0.2L15BMK | 5.1 | 15 | 0.2 | BMK | SIM****H5 | £26.20 | In Stock | |
| MTR5R0.2L22BMK | 5.1 | 22 | 0.2 | BMK | SIM****H5 | £29.89 | 5 days | |
| MTR5R0.2L30BMK | 5.1 | 30 | 0.2 | BMK | SIM****H5 | £33.92 | 5 days | |
| MTR5R0.2L40BMK | 5.1 | 40 | 0.2 | BMK | SIM****H5 | £33.90 | 5 days | |
| MTR6R0.05L15BMK | 6.1 | 15 | 0.05 | BMK | SIM****H6 | £26.91 | 5 days | |
| MTR6R0.05L22BMK | 6.1 | 22 | 0.05 | BMK | SIM****H6 | £29.64 | 5 days | |
| MTR6R0.1L15BMK | 6.1 | 15 | 0.1 | BMK | SIM****H6 | £26.91 | 5 days | |
| MTR6R0.1L22BMK | 6.1 | 22 | 0.1 | BMK | SIM****H6 | £30.48 | 5 days | |
| MTR6R0.2L15BMK | 6.1 | 15 | 0.2 | BMK | SIM****H6 | £26.91 | 5 days | |
| MTR6R0.2L22BMK | 6.1 | 22 | 0.2 | BMK | SIM****H6 | £30.48 | In Stock | |
| MTR6R0.2L30BMK | 6.1 | 30 | 0.2 | BMK | SIM****H6 | £34.42 | In Stock | |
| MTR6R0.2L35BMK | 6.1 | 35 | 0.2 | BMK | SIM****H6 | £37.02 | In Stock | |
| MTR6R0.2L40BMK | 6.1 | 40 | 0.2 | BMK | SIM****H6 | £37.91 | 5 days | |
| MTR7R0.2L22BMK | 7.1 | 22 | 0.2 | BMK | SIM****H7 | £32.47 | 5 days | |
| MTR7R0.2L30BMK | 7.1 | 30 | 0.2 | BMK | SIM****H7 | £35.94 | In Stock | |
| MTR8R0.2L15BMK | 8.1 | 15 | 0.2 | BMK | SIM****H8 | £32.40 | 5 days | |
| MTR8R0.2L22BMK | 8.1 | 22 | 0.2 | BMK | SIM****H8 | £36.58 | 5 days | |
| MTR8R0.2L35BMK | 8.1 | 35 | 0.2 | BMK | SIM****H8 | £38.87 | 5 days | |
| MTR10R0.2L35BMK | 10.1 | 35 | 0.2 | BMK | SIM****H10 | £41.21 | 5 days | |
| MTL1.2R0L7BMK | 1.2 | 7 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL1.2R0L9BMK | 1.2 | 9 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL1.5R0.1L6BMK | 1.5 | 6 | 0.1 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL1.5R0L6BMK | 1.5 | 6 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL10R0.2L35BMK | 10.1 | 35 | 0.2 | BMK | SIM****H10 | £41.21 | 5 days | |
| MTL1R0.05L4BMK | 1 | 4 | 0.05 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL1R0.05L6BMK | 1 | 6 | 0.05 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL1R0L6BMK | 1 | 6 | 0 | BMK | SIM****H3 | £25.49 | 5 days | |
| MTL2.5R0.1L10BMK | 2.5 | 10 | 0.1 | BMK | SIM****H3 | £23.15 | 5 days | |
| MTL2.5R0.1L15BMK | 2.5 | 15 | 0.1 | BMK | SIM****H3 | £24.31 | 5 days | |
| MTL2.5R0L10BMK | 2.5 | 10 | 0 | BMK | SIM****H3 | £23.15 | 5 days | |
| MTL2R0.05L10BMK | 2.1 | 10 | 0.05 | BMK | SIM****H3 | £24.28 | 5 days | |
| MTL2R0.05L5BMK | 2.1 | 5 | 0.05 | BMK | SIM****H3 | £24.27 | 5 days | |
| MTL2R0.15L10BMK | 2.1 | 10 | 0.15 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTL2R0.15L5BMK | 2.1 | 5 | 0.15 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTL2R0.1L10BMK | 2.1 | 10 | 0.1 | BMK | SIM****H3 | £24.27 | 5 days | |
| MTL2R0.1L15BMK | 2.1 | 15 | 0.1 | BMK | SIM****H3 | £24.27 | 5 days | |
| MTL2R0L10BMK | 2.1 | 10 | 0 | BMK | SIM****H3 | £24.27 | 5 days | |
| MTL3R0.05L10BMK | 3.1 | 10 | 0.05 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTL3R0.05L15BMK | 3.1 | 15 | 0.05 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTL3R0.1L10BMK | 3.1 | 10 | 0.1 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTL3R0.1L15BMK | 3.1 | 15 | 0.1 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTL3R0.2L10BMK | 3.1 | 10 | 0.2 | BMK | SIM****H3 | £23.17 | 5 days | |
| MTL3R0.2L15BMK | 3.1 | 15 | 0.2 | BMK | SIM****H3 | £25.17 | 5 days | |
| MTL4R0.05L15BMK Viewing | 4.1 | 15 | 0.05 | BMK | SIM****H3 | £25.61 | 5 days | |
| MTL4R0.05L22BMK | 4.1 | 22 | 0.05 | BMK | SIM****H4 | £26.86 | 5 days | |
| MTL4R0.1L10BMK | 4.1 | 10 | 0.1 | BMK | SIM****H4 | £23.71 | 5 days | |
| MTL4R0.1L15BMK | 4.1 | 15 | 0.1 | BMK | SIM****H4 | £25.61 | 5 days | |
| MTL4R0.1L22BMK | 4.1 | 22 | 0.1 | BMK | SIM****H4 | £26.89 | 5 days | |
| MTL4R0.2L10BMK | 4.1 | 10 | 0.2 | BMK | SIM****H4 | £23.71 | 5 days | |
| MTL4R0.2L15BMK | 4.1 | 15 | 0.2 | BMK | SIM****H4 | £25.61 | 5 days | |
| MTL4R0.2L22BMK | 4.1 | 22 | 0.2 | BMK | SIM****H4 | £26.89 | 5 days | |
| MTL4R0.2L30BMK | 4.1 | 30 | 0.2 | BMK | SIM****H4 | £30.45 | 5 days | |
| MTL5R0.05L15BMK | 5.1 | 15 | 0.05 | BMK | SIM****H5 | £26.20 | 5 days | |
| MTL5R0.1L15BMK | 5.1 | 15 | 0.1 | BMK | SIM****H5 | £26.20 | 5 days | |
| MTL5R0.1L22BMK | 5.1 | 22 | 0.1 | BMK | SIM****H5 | £29.89 | 5 days | |
| MTL5R0.1L30BMK | 5.1 | 30 | 0.1 | BMK | SIM****H5 | £33.92 | 5 days | |
| MTL5R0.2L10BMK | 5.1 | 10 | 0.2 | BMK | SIM****H5 | £26.18 | 5 days | |
| MTL5R0.2L15BMK | 5.1 | 15 | 0.2 | BMK | SIM****H5 | £26.20 | 5 days | |
| MTL5R0.2L22BMK | 5.1 | 22 | 0.2 | BMK | SIM****H5 | £29.89 | 5 days | |
| MTL5R0.2L30BMK | 5.1 | 30 | 0.2 | BMK | SIM****H5 | £33.92 | 5 days | |
| MTL5R0.2L40BMK | 5.1 | 40 | 0.2 | BMK | SIM****H5 | £33.90 | 5 days | |
| MTL6R0.05L15BMK | 6.1 | 15 | 0.05 | BMK | SIM****H6 | £26.91 | 5 days | |
| MTL6R0.05L22BMK | 6.1 | 22 | 0.05 | BMK | SIM****H6 | £29.65 | 5 days | |
| MTL6R0.1L15BMK | 6.1 | 15 | 0.1 | BMK | SIM****H6 | £26.91 | 5 days | |
| MTL6R0.1L22BMK | 6.1 | 22 | 0.1 | BMK | SIM****H6 | £30.48 | 5 days | |
| MTL6R0.2L15BMK | 6.1 | 15 | 0.2 | BMK | SIM****H6 | £26.30 | 5 days | |
| MTL6R0.2L22BMK | 6.1 | 22 | 0.2 | BMK | SIM****H6 | £25.58 | 5 days | |
| MTL6R0.2L30BMK | 6.1 | 30 | 0.2 | BMK | SIM****H6 | £34.46 | 5 days | |
| MTL6R0.2L35BMK | 6.1 | 35 | 0.2 | BMK | SIM****H6 | £37.02 | 5 days | |
| MTL6R0.2L40BMK | 6.1 | 40 | 0.2 | BMK | SIM****H6 | £37.91 | 5 days | |
| MTL7R0.2L22BMK | 7.1 | 22 | 0.2 | BMK | SIM****H7 | £32.47 | 5 days | |
| MTL7R0.2L30BMK | 7.1 | 30 | 0.2 | BMK | SIM****H7 | £35.97 | 5 days | |
| MTL8R0.2L15BMK | 8.1 | 15 | 0.2 | BMK | SIM****H8 | £32.40 | 5 days | |
| MTL8R0.2L22BMK | 8.1 | 22 | 0.2 | BMK | SIM****H8 | £36.58 | 5 days | |
| MTL8R0.2L35BMK | 8.1 | 35 | 0.2 | BMK | SIM****H8 | £38.87 | 5 days |
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