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Carmex Carbide Tiny Tools - Back Turning Tool (MXR) - Grade K20 - 4.1mm Min Diameter x 10mm Reach
| Application | Back Turning (MXR) |
| Minimum Diameter | 4.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.15 |
| Max Back Turn Depth (H) | 0.8 |
| L | 51 |
Learn more about Klarna
The Carmex Carbide Tiny Tools Small Back Turning Tool (MXR) is a precision carbide cutting tool built for small turning tasks. Its back-turning geometry enables clean, accurate finishing on the rear faces of tiny parts, reducing secondary operations and boosting dimensional consistency.
Crafted from premium K20 carbide, this tool offers outstanding edge life, wear resistance, and stiffness. With a 4.1 mm minimum diameter and a 10 mm reach, it is tailored for turning miniature components and assemblies where space is limited.
- Back-turning geometry for precise backside surfaces: Delivers clean, uniform finishes on hidden faces, minimizing the need for extra passes and improving part-to-part consistency.
- Premium K20 carbide for durability and wear resistance: Delivers long tool life and sustained cutting performance, reducing replacements and downtime in demanding small-part turning.
- Compact size with 4.1 mm min diameter and 10 mm reach: Provides access to tight features and tight setups, delivering stable cutting and reliable results in confined spaces.
This tool supports efficient workflows for engineers, machinists, and hobbyists alike. It helps you complete small-part turning with fewer setups and less rework, while maintaining consistent backside finishes and reliable tool life. The MXR configuration offers precise control in tight spaces, enabling you to tackle delicate components with confidence and deliver repeatable, high-quality results.
| Application | Back Turning (MXR) |
| Minimum Diameter | 4.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.15 |
| Max Back Turn Depth (H) | 0.8 |
| L | 51 |
| B | 1.3 |
| F | 1.7 |
| Grade | K20 |
| Holder | SIM****H4 |
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 - Back Turning - Grade K20 (MXR)
View full collection →You are viewing MXR4R0.15L10K20. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Reach | Radius | Max Back Turn Depth | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MXR6R0.2L22K20 | 6.1 | 22 | 0.2 | 1.8 | K20 | SIM****H6 | £24.40 | 5 days | |
| MXR4R0.15L15K20 | 4.1 | 15 | 0.15 | 0.8 | K20 | SIM****H4 | £23.43 | 5 days | |
| MXR5R0.2L15K20 | 5.1 | 15 | 0.2 | 1 | K20 | SIM****H5 | £23.65 | 5 days | |
| MXR4R0.1L10K20 | 3.1 | 10 | 0.1 | 0.5 | K20 | SIM****H4 | £23.18 | 5 days | |
| MXR5R0.2L22K20 | 5.1 | 22 | 0.2 | 1 | K20 | SIM****H5 | £23.90 | 5 days | |
| MXR6R0.2L15K20 | 6.1 | 15 | 0.2 | 1.8 | K20 | SIM****H6 | £24.20 | 5 days | |
| MXR4R0.15L10K20 Viewing | 4.1 | 10 | 0.15 | 0.8 | K20 | SIM****H4 | £23.18 | 5 days | |
| MXL4R0.15L10K20 | 4.1 | 10 | 0.15 | 0.8 | K20 | SIM****H4 | £23.18 | 5 days | |
| MXL4R0.15L15K20 | 4.1 | 15 | 0.15 | 0.8 | K20 | SIM****H4 | £23.43 | 5 days | |
| MXL4R0.1L10K20 | 3.1 | 10 | 0.1 | 0.5 | K20 | SIM****H4 | £23.18 | 5 days | |
| MXL5R0.2L15K20 | 5.1 | 15 | 0.2 | 1 | K20 | SIM****H5 | £23.65 | 5 days | |
| MXL5R0.2L22K20 | 5.1 | 22 | 0.2 | 1 | K20 | SIM****H5 | £23.90 | 5 days | |
| MXL6R0.2L15K20 | 6.1 | 15 | 0.2 | 1.8 | K20 | SIM****H6 | £24.20 | 5 days | |
| MXL6R0.2L22K20 | 6.1 | 22 | 0.2 | 1.8 | K20 | SIM****H6 | £20.63 | 5 days |
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