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Carmex Carbide Tiny Tool - Face Grooving - MFR - K20 Grade - 5mm Minimum Diameter x 2mm Groove Width
| Application | Face Grooving (MFR) |
| Minimum Diameter | 5 |
| Groove Width (B) | 2 |
| Groove Depth (T) | 5 |
| Reach (L1) | 17 |
| Radius (R) | 0.1 |
Learn more about Klarna
Carmex Carbide Tiny Tool – Face Grooving is a precision solid carbide bar engineered for accurate, straight grooves. Built in MFR K20 grade carbide and part of the Tiny Tools family, it’s designed to deliver crisp shoulders and reliable seating surfaces with minimal finishing. It’s a versatile choice for technicians, engineers, and fabricators working with a range of materials, including stainless steels.
With a 5 mm minimum diameter and a 2 mm groove width, this tool is optimized for consistent groove geometry and dependable performance across jobs. The line offers two coating grades to match your applications: BXC TiN coating for lower-speed cutting and stainless steel work, and BMK sub-micron grade with a triple PVD coating for exceptional heat resistance and smooth cutting in demanding materials.
- Straight-Groove Precision: Specifically designed for face grooving, it delivers clean, straight grooves with sharp shoulders for predictable seating and reduced post-processing.
- Coating Options for Versatility: BXC TiN-coated grade excels at low-speed cuts on stainless steels (ISO P30-P50 / K25-K40), while BMK’s triple-PVD coating provides outstanding heat resistance for tougher materials and longer tool life.
- Durable Carbide for Long Tool Life: Solid carbide construction paired with advanced coatings delivers durable wear resistance and consistent performance across a broad range of materials and production runs.
This tool helps you streamline workflows by producing repeatable, high-quality grooves with minimal setup and finishing time. The combination of rigid carbide, precise geometry, and coatings designed for speed and heat management means fewer tool changes, faster cycle times, and more confident results on complex parts.
| Application | Face Grooving (MFR) |
| Minimum Diameter | 5 |
| Groove Width (B) | 2 |
| Groove Depth (T) | 5 |
| Reach (L1) | 17 |
| Radius (R) | 0.1 |
| L | 51 |
| F | 1.95 |
| D | 4.0 |
| 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 - Face Grooving - Grade K20 (MFR)
View full collection →You are viewing MFR4B2.0L17K20. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Groove Width | Groove Depth | Reach | Radius | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|---|
| MFR5B1.0L23K20 | 6 | 1 | 2.5 | 23 | 0.1 | K20 | SIM****H5 | £25.79 | 5 days | |
| MFR5B2.0L23K20 | 6 | 2 | 5 | 23 | 0.1 | K20 | SIM****H5 | £27.12 | 5 days | |
| MFR4B1.5L15K20 | 5 | 1.5 | 2.8 | 15 | 0.1 | K20 | SIM****H4 | £22.80 | 5 days | |
| MFR5B1.5L22K20 | 6 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H5 | £25.81 | 5 days | |
| MFR4B2.0L17K20 Viewing | 5 | 2 | 5 | 17 | 0.1 | K20 | SIM****H4 | £25.16 | 5 days | |
| MFR6B3.0L30K20 | 8 | 3 | 6 | 30 | 0.1 | K20 | SIM****H6 | £27.65 | 5 days | |
| MFR5B0.75L22K20 | 6 | 0.75 | 1.2 | 22 | 0.1 | K20 | SIM****H5 | £25.81 | 5 days | |
| MFR5B1.0L22K20 | 6 | 1 | 1.5 | 22 | 0.1 | K20 | SIM****H5 | £25.81 | 5 days | |
| MFR6B2.0L22-CK20 | 8 | 2 | 3 | 22 | 0.1 | K20 | SIM****H6 | £28.95 | 5 days | |
| MFR4B1.0L15K20 | 5 | 1 | 1.5 | 15 | 0.1 | K20 | SIM****H4 | £22.80 | 5 days | |
| MFR5B1.5L22-CK20 | 6 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H5 | £28.41 | 5 days | |
| MFR6B2.5L22K20 | 8 | 2.5 | 4.8 | 22 | 0.1 | K20 | SIM****H6 | £26.30 | 5 days | |
| MFR4B1.5L17K20 | 5 | 1.5 | 3.5 | 17 | 0.1 | K20 | SIM****H4 | £23.97 | 5 days | |
| MFR4B1.5L15-CK20 | 5 | 1.5 | 2.8 | 15 | 0.1 | K20 | SIM****H4 | £25.14 | 5 days | |
| MFR6B3.0L22-CK20 | 8 | 3 | 6 | 22 | 0.1 | K20 | SIM****H6 | £28.95 | 5 days | |
| MFR6B2.0L22K20 | 8 | 2 | 3 | 22 | 0.1 | K20 | SIM****H6 | £26.30 | 5 days | |
| MFR5B0.5L22K20 | 6 | 0.5 | 1.2 | 22 | 0.05 | K20 | SIM****H5 | £25.79 | 5 days | |
| MFR5B2.0L22K20 | 6 | 2 | 3.8 | 22 | 0.1 | K20 | SIM****H5 | £25.81 | 5 days | |
| MFR6B1.5L22-CK20 | 8 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H6 | £28.95 | 5 days | |
| MFR5B2.0L22-CK20 | 6 | 2 | 3.8 | 22 | 0.1 | K20 | SIM****H5 | £28.41 | 5 days | |
| MFR6B1.0L22K20 | 8 | 1 | 1.5 | 22 | 0.1 | K20 | SIM****H6 | £26.30 | 5 days | |
| MFR5B1.5L23K20 | 6 | 1.5 | 3.5 | 23 | 0.1 | K20 | SIM****H5 | £25.79 | 5 days | |
| MFR8B2.5L22K20 | 10 | 2.5 | 3.5 | 22 | 0.1 | K20 | SIM****H8 | £31.29 | 5 days | |
| MFR6B1.5L22K20 | 8 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H6 | £26.30 | 5 days | |
| MFR4B0.5L15K20 | 5 | 0.5 | 1.2 | 15 | 0.05 | K20 | SIM****H4 | £22.83 | 5 days | |
| MFR4B0.75L15K20 | 5 | 0.75 | 1.2 | 15 | 0.1 | K20 | SIM****H4 | £22.80 | 5 days | |
| MFL4B1.5L15-CK20 | 5 | 1.5 | 2.8 | 15 | 0.1 | K20 | SIM****H4 | £25.16 | 5 days | |
| MFL5B1.5L22-CK20 | 6 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H5 | £28.39 | 5 days | |
| MFL5B2.0L22-CK20 | 6 | 2 | 3.8 | 22 | 0.1 | K20 | SIM****H5 | £28.39 | 5 days | |
| MFL6B1.5L22-CK20 | 8 | 1.5 | 2.5 | 22 | 0.1 | K20 | SIM****H6 | £28.94 | 5 days | |
| MFL6B2.0L22-CK20 | 8 | 2 | 3 | 22 | 0.1 | K20 | SIM****H6 | £28.94 | 5 days | |
| MFL6B3.0L22-CK20 | 8 | 3 | 6 | 22 | 0.1 | K20 | SIM****H6 | £28.94 | 5 days |
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