Please log in here to access all benefits, including promotional discounts and faster checkouts.
Carmex Carbide Tiny Tool - Full Radius Face Grooving - MZR - K20 Grade - 5mm Minimum Diameter x 1mm Groove Width
| Application | Full Radius Face Grooving (MZR) |
| Minimum Diameter | 5 |
| Groove Width (W) | 1 |
| Groove Depth (T) | 1.2 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
The Carmex Carbide Tiny Tool is a solid carbide bar engineered specifically for face grooving applications. Its full-radius face-groove design creates rounded grooves, delivering a smoother surface and improved sealing characteristics for small-fastening features, seals, and precision components. Built for a broad audience—from engineers and buyers to tradespeople and hobbyists—it offers reliable, repeatable geometry in a compact, easy-to-use form.
- Full-radius groove profile: Produces rounded grooves for a smoother finish and stronger sealing surfaces, instead of straight grooves that can require extra finishing steps.
- Compact, precise dimensions: 5 mm minimum diameter with a 1 mm groove width lets you work in tight pockets and on small features with confidence.
- Durable MZR-K20 carbide with right-hand geometry: High-wear‑resistant, tough carbide supports long tool life and stable performance in demanding materials and high-speed operations.
Designed for right-hand cutting, this tool delivers dependable, consistent groove geometry across jobs, helping you reduce downtime, minimize rework, and achieve reliable results in precision assemblies.
Part Numbers
- Protool Part Number
- MZR4R0.5L15K20
- Brand
- Carmex
- Category
- Tiny Tool Inserts
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 - Full Radius Face Grooving - Grade K20 (MZR)
View full collection →You are viewing MZR4R0.5L15K20. Click any other SKU to view its full details.
| Product SKU | Minimum Diameter | Groove Width | Groove Depth | Reach | Grade | Holder | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MZR6R0.5L22K20 | 8 | 1 | 1.2 | 22 | K20 | SIM****H6 | £26.73 | 5 days | |
| MZR4R0.5L15K20 Viewing | 5 | 1 | 1.2 | 15 | K20 | SIM****H4 | £23.18 | 5 days | |
| MZR6R0.75L22K20 | 8 | 1.5 | 1.5 | 22 | K20 | SIM****H6 | £26.73 | 5 days | |
| MZR5R0.5L22K20 | 6 | 1 | 1.2 | 22 | K20 | SIM****H5 | £26.23 | 5 days | |
| MZR5R1.0L22K20 | 6 | 2 | 2.5 | 22 | K20 | SIM****H5 | £26.23 | 5 days | |
| MZR6R1.0L22K20 | 8 | 2 | 2.5 | 22 | K20 | SIM****H6 | £26.73 | 5 days | |
| MZR4R0.75L15K20 | 5 | 1.5 | 1.5 | 15 | K20 | SIM****H4 | £23.18 | 5 days | |
| MZR5R0.75L22K20 | 6 | 1.5 | 1.5 | 22 | K20 | SIM****H5 | £26.23 | 5 days |
No products match your filters.
