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Carmex Carbide Tiny Tool - Chamfer & Boring - MCR - K20 Grade - 3.1mm Minimum Diameter x 10mm Reach
| Application | Chamfer & Boring (MCR) |
| Minimum Diameter | 3.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.2 |
| Chamfer Depth (H1) | 0.3 |
| L | 39 |
Learn more about Klarna
The Carmex Carbide Tiny Tool – Chamfer & Boring (MCR) is a precision cutting tool designed for small chamfering and boring tasks. It is ideal for engineers, machinists, and hobbyists working on miniature parts and components who need clean edges and precise holes in tight spaces.
Constructed from premium-grade K20 carbide, this tool delivers durability, edge retention, and wear resistance you can trust. With a 3.1 mm minimum diameter and a 10 mm reach, it excels at creating smooth chamfers and accurate bores in compact features without sacrificing control or finish.
- Small-diameter precision geometry: Delivers clean chamfers and accurate bores on tiny parts with consistent finish, even in tight work envelopes.
- Durable K20 carbide construction: Long edge life and excellent wear resistance keep the tool sharp longer for repeated runs on small components.
- 10 mm reach for tight work areas: Allows access to confined features without repositioning the workholding, reducing setup time and improving consistency.
Whether you’re deburring delicate assemblies, finishing small chamfers, or drilling tight bores in miniature components, the Carmex Tiny Tool helps you achieve repeatable, high-quality results. Its compact form and tough carbide deliver reliable performance in limited-space setups, helping you speed up workflows, reduce downtime, and improve finish consistency across batches.
| Application | Chamfer & Boring (MCR) |
| Minimum Diameter | 3.1 |
| Reach (L1) | 10 |
| Radius (R) | 0.2 |
| Chamfer Depth (H1) | 0.3 |
| L | 39 |
| H | 0.7 |
| F | 1.3 |
| D | 3.0 |
| Grade | K20 |
| Holder | SIM****H3 |
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 - Chamfering & Boring - Grade K20 (MCR)
View full collection →You are viewing MCR3R0.2L10K20. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Reach | Radius | Chamfer Depth | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MCR7R0.2L20K20 | 7.1 | 20 | 0.2 | 0.8 | K20 | SIM****H7 | £33.10 | 5 days | |
| MCR4R0.2L15K20 | 4.1 | 15 | 0.2 | 0.4 | K20 | SIM****H4 | £23.15 | 5 days | |
| MCR3R0.2L10K20 Viewing | 3.1 | 10 | 0.2 | 0.3 | K20 | SIM****H3 | £22.85 | 5 days | |
| MCR5R0.2L15K20 | 5.1 | 15 | 0.2 | 0.7 | K20 | SIM****H5 | £23.65 | 5 days | |
| MCR6R0.2L15K20 | 6.1 | 15 | 0.2 | 0.7 | K20 | SIM****H6 | £24.20 | 5 days | |
| MCL3R0.2L10K20 | 3.1 | 10 | 0.2 | 0.3 | K20 | SIM****H3 | £22.85 | 5 days | |
| MCL4R0.2L15K20 | 4.1 | 15 | 0.2 | 0.4 | K20 | SIM****H4 | £23.15 | 5 days | |
| MCL5R0.2L15K20 | 5.1 | 15 | 0.2 | 0.7 | K20 | SIM****H5 | £23.65 | 5 days | |
| MCL6R0.2L15K20 | 6.1 | 15 | 0.2 | 0.7 | K20 | SIM****H6 | £24.20 | 5 days | |
| MCL7R0.2L20K20 | 7.1 | 20 | 0.2 | 0.8 | K20 | SIM****H7 | £33.10 | 5 days |
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