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Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade - 7.1mm Minimum Diameter x 22mm Reach x R0.2 (Left Hand)

Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade - 7.1mm Minimum Diameter x 22mm Reach x R0.2 (Left Hand)

SKU:MTL7R0.2L22K20

The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide tool designed for internal boring and general turning tasks. Its precise left-hand geometry and small-diameter footprint make... Read more ↓
M
K
N
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ApplicationBoring (MTL)
Minimum Diameter7.1
Reach (L1)22
Radius (R)0.2
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£28.50
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Carbide Tiny Tool - Boring Bar is a compact, solid carbide tool designed for internal boring and general turning tasks. Its precise left-hand geometry and small-diameter footprint make it ideal for tight bores and delicate finishing passes, while delivering consistent, reliable performance across a range of materials.

Built to cover a spectrum of machining needs, it features a robust carbide core with optimized coatings. The BMK grade offers sub-micron structure with a PVD triple coating for exceptional heat resistance and smooth cutting; the BXC grade uses a PVD TiN coating tuned for low cutting speeds and stainless steel performance.

  • BMK sub-micron grade with PVD triple coating: Extremely high heat resistance and smooth cutting action for maximum performance across materials, helping you maintain consistent feeds and finishes.
  • PVD TiN coated BXC option for stainless steels: Low-friction coating that extends tool life at lower cutting speeds and works well with a wide range of stainless steels (ISO P30-P50 / K25-K40).
  • Left-hand bore geometry with 7.1 mm minimum diameter, 22 mm reach, and R0.2 nose: Enables precise, controlled plunges and deep bores in confined spaces with reliable chip evacuation and predictable results.

This tiny carbide boring bar supports reliable, repeatable results in challenging internal features, reducing downtime and improving workflow. Its durable construction and coatings designed for heat and friction help maintain accuracy over long runs, making it a dependable choice for cramped bores, stainless steel work, and general turning tasks.

Part Numbers

Protool Part Number
MTL7R0.2L22K20
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.

Complete Your Project

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