Please log in here to access all benefits, including promotional discounts and faster checkouts.

Carmex Carbide Tiny Tool - Face Grooving - MFR - K20 Grade - 10mm Minimum Diameter x 2.5mm Groove Width

Carmex Carbide Tiny Tool - Face Grooving - MFR - K20 Grade - 10mm Minimum Diameter x 2.5mm Groove Width

SKU:MFR8B2.5L22K20

Carmex Carbide Tiny Tool - Face Grooving is a solid carbide bar engineered for precise, straight grooves on face surfaces. From the Tiny Tools family, it’s designed to deliver clean walls and rep... Read more ↓
M
K
N
S
ApplicationFace Grooving (MFR)
Minimum Diameter10
Groove Width (B)2.5
Groove Depth (T)3.5
View all specifications ↓
Download Cutting Data
£31.80
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Carmex Carbide Tiny Tool - Face Grooving is a solid carbide bar engineered for precise, straight grooves on face surfaces. From the Tiny Tools family, it’s designed to deliver clean walls and repeatable results in CNC and manual setups.

Two coating grades expand its versatility: BXC - a PVD TiN coated grade for low cutting speeds and broad stainless steel compatibility; BMK - a sub-micron grade with advanced PVD triple coating delivering extremely high heat resistance and smooth cutting. This tool is a practical, general-purpose choice for a wide range of materials.

  • Straight-groove geometry for precision: Delivers straight, uniform grooves on face surfaces, ensuring clean walls and repeatable results instead of rounded grooves common with other bar styles.
  • Coated carbide grades for versatile performance: BXC TiN coating supports efficient cutting at lower speeds and works well with stainless steels (ISO P30-P50 / K25-K40); BMK’s sub-micron grade with triple coating provides exceptional heat resistance and smooth cutting for demanding materials.
  • Precisely sized for standard setups: Designed with a 10 mm minimum diameter and 2.5 mm groove width to seat predictably in common holders, delivering consistent groove geometry across jobs.

This combination of straight-groove capability, versatile coating options, and precise sizing helps you complete face-grooving tasks more efficiently. Expect reliable edge life, reduced rework, and consistent results across a wide range of materials, including stainless steels, which translates to faster setups, fewer passes, and improved overall workflow in both professional shops and hobbyist workshops.

Part Numbers

Protool Part Number
MFR8B2.5L22K20
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Carmex Carbide Tiny Tools - Face Grooving - Grade K20 (MFR)

View full collection →

You are viewing MFR8B2.5L22K20. Click any other SKU to view its full details.

Product SKUMinimum DiameterGroove WidthGroove DepthReachRadiusGradeHolderPriceStock Order
MFR5B1.0L23K20 612.5230.1K20SIM****H5£22.15 5 days
MFR5B2.0L23K20 625230.1K20SIM****H5£23.30 5 days
MFR4B1.5L15K20 51.52.8150.1K20SIM****H4£23.18 5 days
MFR5B1.5L22K20 61.52.5220.1K20SIM****H5£26.23 5 days
MFR4B2.0L17K20 525170.1K20SIM****H4£21.63 5 days
MFR6B3.0L30K20 836300.1K20SIM****H6£28.10 5 days
MFR5B0.75L22K20 60.751.2220.1K20SIM****H5£26.23 5 days
MFR5B1.0L22K20 611.5220.1K20SIM****H5£26.23 5 days
MFR6B2.0L22-CK20 823220.1K20SIM****H6£29.43 5 days
MFR4B1.0L15K20 511.5150.1K20SIM****H4£23.18 5 days
MFR5B1.5L22-CK20 61.52.5220.1K20SIM****H5£28.88 5 days
MFR6B2.5L22K20 82.54.8220.1K20SIM****H6£26.73 5 days
MFR4B1.5L17K20 51.53.5170.1K20SIM****H4£20.60 5 days
MFR4B1.5L15-CK20 51.52.8150.1K20SIM****H4£25.55 5 days
MFR6B3.0L22-CK20 836220.1K20SIM****H6£29.43 5 days
MFR6B2.0L22K20 823220.1K20SIM****H6£26.73 5 days
MFR5B0.5L22K20 60.51.2220.05K20SIM****H5£22.15 5 days
MFR5B2.0L22K20 623.8220.1K20SIM****H5£26.23 5 days
MFR6B1.5L22-CK20 81.52.5220.1K20SIM****H6£29.43 5 days
MFR5B2.0L22-CK20 623.8220.1K20SIM****H5£28.88 5 days
MFR6B1.0L22K20 811.5220.1K20SIM****H6£26.73 5 days
MFR5B1.5L23K20 61.53.5230.1K20SIM****H5£22.15 5 days
MFR8B2.5L22K20 Viewing102.53.5220.1K20SIM****H8£31.80 5 days
MFR6B1.5L22K20 81.52.5220.1K20SIM****H6£26.73 5 days
MFR4B0.5L15K20 50.51.2150.05K20SIM****H4£19.63 5 days
MFR4B0.75L15K20 50.751.2150.1K20SIM****H4£23.18 5 days
MFL4B1.5L15-CK20 51.52.8150.1K20SIM****H4£21.63 5 days
MFL5B1.5L22-CK20 61.52.5220.1K20SIM****H5£24.40 5 days
MFL5B2.0L22-CK20 623.8220.1K20SIM****H5£24.40 5 days
MFL6B1.5L22-CK20 81.52.5220.1K20SIM****H6£24.88 5 days
MFL6B2.0L22-CK20 823220.1K20SIM****H6£24.88 5 days
MFL6B3.0L22-CK20 836220.1K20SIM****H6£24.88 5 days

Complete Your Project

Tooling and consumables that work with this product.
All 7 →