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Carmex Carbide Tiny Tool - Boring Bar - MTR - K20 Grade - 6.1mm Minimum Diameter x 22mm Reach x R0.2
| Application | Boring (MTR) |
| Minimum Diameter | 6.1 |
| Reach (L1) | 22 |
| Radius (R) | 0.2 |
| Grade | K20 |
| Holder | SIM****H6 |
Learn more about Klarna
The Carmex Carbide Tiny Tool - Boring Bar is a compact solid carbide bar designed for precise boring and versatile turning. Its small-diameter profile is ideal for tight holes and constrained workspaces, delivering stable cuts and clean finishes.
Dimensionally, it features a 6.1 mm minimum diameter, 22 mm reach, and an R0.2 tip radius, making it a reliable choice for detail work. It belongs to Carmex's MTR line in K20 grade and is offered in two coated variants: BXC TiN-coated for low cutting speeds on stainless steels, and BMK sub-micron grade with triple PVD coating for exceptional heat resistance and smooth cutting across common materials.
- Precision tiny boring bar geometry: Designed for small-diameter bores with a 6.1 mm minimum diameter, 22 mm reach, and an R0.2 radius to deliver stable, accurate cuts in tight spaces.
- BXC TiN coating for stainless steels at low speeds: PVD TiN coating optimizes performance at low cutting speeds, extending edge life and improving reliability when working with stainless steels (ISO P30-P50 / K25-K40).
- BMK triple-coated sub-micron grade for high heat resistance: Advanced PVD triple coating provides excellent heat tolerance and smooth cutting, delivering dependable performance across a broad range of materials (ISO K10-K20).
Whether you’re setting up production bores, performing precision repairs, or tackling tight-pocket turning, this tool delivers consistent hole quality and dependable life across materials. The dual coating options let you tailor edge life and cutting performance to your workflow, helping reduce tool changes, improve surface finishes, and maintain steady productivity.
| Application | Boring (MTR) |
| Minimum Diameter | 6.1 |
| Reach (L1) | 22 |
| Radius (R) | 0.2 |
| Grade | K20 |
| Holder | SIM****H6 |
| L | 51 |
| F | 2.8 |
| D | 6 |
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.
