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


Widin Carbide End Mill - 2 Flute Tapered Neck Type - Ball Nose - 4mm x 20mm x 1.0Ø
| Cutter Diameter | 4 |
| Number of Flutes | 2 |
| Flute Length | 8 |
| Overall Length | 70 |
Learn more about Klarna
Description
The Widin Carbide End Mill is a high-performance cutting tool built for demanding milling tasks. This 2-flute ball nose end mill features a tapered neck to reduce vibration and chatter, delivering smooth, stable cuts in deep grooves and on sloped surfaces. Precision and reliability come together to help you achieve accurate shapes and finishes even on challenging contours.
Designed for engineers, machinists, and hobbyists who work with complex profiles, this end mill is crafted to handle tough materials while maintaining consistent results. Its advanced raw material and coating are optimized for dry cutting and high-speed cutting, enabling efficient performance in real-world fabrication environments and helping you push your setups to the limit with confidence.
- Tapered Neck for Stability: Reduces tool vibration and chatter, enabling smooth, accurate cuts in deep grooves and on inclined surfaces for reliable dimensional control.
- 2-Flute Ball Nose Design: Provides efficient material removal and smooth contour finishes with strong rigidity, ideal for precise 3D shaping and finishing work.
- Hardened-Material Ready with Advanced Coating: Engineered to cut hard materials up to HRc70, with a new coating that supports dry and high-speed cutting and extends tool life in demanding environments.
This end mill helps you streamline workflows by delivering repeatable, high-quality finishes on challenging parts. The tapered neck and ball nose geometry reduce the need for rework, while the hardened-material capability and advanced coating offer durability and performance you can rely on in everyday production—whether you’re machining deep cavities, steep surfaces, or intricate contours.
Part Numbers
- Protool Part Number
- ESTNB2040-20-10
- Brand
- Widin
- Category
- End Mill
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
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: Widin Carbide End Mill - 2 Flute Tapered Neck Type - Ball Nose (ZSTNB20)
View full collection →You are viewing ESTNB2040-20-10. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Reach | Radius | Neck Diameter | Taper Angle | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ESTNB2002-1-04 | 0.2 | 2 | 0.15 | 50 | 4 | 1 | 0.1 | 0.17 | 0.4° | £71.00 | 5 days | |
| ESTNB2002-1.5-04 | 0.2 | 2 | 0.15 | 50 | 4 | 1.5 | 0.1 | 0.17 | 0.4° | £71.00 | 5 days | |
| ESTNB2002-2-09 | 0.2 | 2 | 0.15 | 50 | 4 | 2 | 0.1 | 0.17 | 0.9° | £73.88 | 5 days | |
| ESTNB2002-2.5-09 | 0.2 | 2 | 0.15 | 50 | 4 | 2.5 | 0.1 | 0.17 | 0.9° | £73.88 | 5 days | |
| ESTNB2003-2-04 | 0.3 | 2 | 0.25 | 50 | 4 | 2 | 0.15 | 0.28 | 0.4° | £55.65 | 5 days | |
| ESTNB2003-3-09 | 0.3 | 2 | 0.25 | 50 | 4 | 3 | 0.15 | 0.28 | 0.9° | £55.65 | 5 days | |
| ESTNB2003-4-09 | 0.3 | 2 | 0.25 | 50 | 4 | 4 | 0.15 | 0.28 | 0.9° | £58.55 | 5 days | |
| ESTNB2004-2-04 | 0.4 | 2 | 0.3 | 50 | 4 | 2 | 0.2 | 0.37 | 0.4° | £55.65 | 5 days | |
| ESTNB2004-3-04 | 0.4 | 2 | 0.3 | 50 | 4 | 3 | 0.2 | 0.37 | 0.4° | £55.65 | 5 days | |
| ESTNB2004-4-04 | 0.4 | 2 | 0.3 | 50 | 4 | 4 | 0.2 | 0.37 | 0.4° | £55.65 | 5 days | |
| ESTNB2004-4-09 | 0.4 | 2 | 0.3 | 50 | 4 | 4 | 0.2 | 0.37 | 0.9° | £55.65 | 5 days | |
| ESTNB2004-5-04 | 0.4 | 2 | 0.3 | 50 | 4 | 5 | 0.2 | 0.37 | 0.4° | £58.55 | 5 days | |
| ESTNB2004-5-09 | 0.4 | 2 | 0.3 | 50 | 4 | 5 | 0.2 | 0.37 | 0.9° | £58.55 | 5 days | |
| ESTNB2005-4-04 | 0.5 | 2 | 0.35 | 50 | 4 | 4 | 0.25 | 0.47 | 0.4° | £44.13 | 5 days | |
| ESTNB2005-8-09 | 0.5 | 2 | 0.35 | 50 | 4 | 8 | 0.25 | 0.57 | 0.9° | £46.05 | 5 days | |
| ESTNB2005-12-09 | 0.5 | 2 | 0.35 | 50 | 4 | 12 | 0.25 | 0.47 | 0.9° | £47.98 | 5 days | |
| ESTNB2006-2-04 | 0.6 | 2 | 0.4 | 50 | 4 | 2 | 0.3 | 0.57 | 0.4° | £42.35 | 5 days | |
| ESTNB2006-4-04 | 0.6 | 2 | 0.4 | 50 | 4 | 4 | 0.3 | 0.57 | 0.4° | £44.13 | 5 days | |
| ESTNB2006-6-04 | 0.6 | 2 | 0.4 | 50 | 4 | 6 | 0.3 | 0.57 | 0.4° | £44.13 | 5 days | |
| ESTNB2006-6-09 | 0.6 | 2 | 0.4 | 50 | 4 | 6 | 0.3 | 0.57 | 0.9° | £44.13 | 5 days | |
| ESTNB2006-8-09 | 0.6 | 2 | 0.4 | 50 | 4 | 8 | 0.3 | 0.57 | 0.9° | £46.05 | 5 days | |
| ESTNB2006-10-04 | 0.6 | 2 | 0.4 | 50 | 4 | 10 | 0.3 | 0.57 | 0.4° | £47.98 | 5 days | |
| ESTNB2006-10-09 | 0.6 | 2 | 0.4 | 50 | 4 | 10 | 0.3 | 0.57 | 0.9° | £47.98 | 5 days | |
| ESTNB2006-12-09 | 0.6 | 2 | 0.4 | 55 | 4 | 12 | 0.3 | 0.57 | 0.9° | £47.98 | 5 days | |
| ESTNB2006-15-04 | 0.6 | 2 | 0.4 | 55 | 4 | 15 | 0.3 | 0.57 | 0.4° | £50.85 | 5 days | |
| ESTNB2006-15-09 | 0.6 | 2 | 0.4 | 55 | 4 | 15 | 0.3 | 0.57 | 0.9° | £50.85 | 5 days | |
| ESTNB2008-4-04 | 0.8 | 2 | 0.5 | 50 | 4 | 4 | 0.4 | 0.77 | 0.4° | £44.13 | 5 days | |
| ESTNB2008-6-04 | 0.8 | 2 | 0.5 | 50 | 4 | 6 | 0.4 | 0.77 | 0.4° | £44.13 | 5 days | |
| ESTNB2008-8-09 | 0.8 | 2 | 0.5 | 50 | 4 | 8 | 0.4 | 0.77 | 0.9° | £45.95 | 5 days | |
| ESTNB2008-12-09 | 0.8 | 2 | 0.5 | 55 | 4 | 12 | 0.4 | 0.77 | 0.9° | £47.98 | 5 days | |
| ESTNB2008-16-09 | 0.8 | 2 | 0.5 | 55 | 4 | 16 | 0.4 | 0.77 | 0.9° | £50.85 | 5 days | |
| ESTNB2009-4-04 | 0.9 | 2 | 0.6 | 50 | 4 | 4 | 0.45 | 0.86 | 0.4° | £44.13 | 5 days | |
| ESTNB2009-8-04 | 0.9 | 2 | 0.6 | 55 | 4 | 8 | 0.45 | 0.86 | 0.4° | £45.95 | 5 days | |
| ESTNB2009-12-04 | 0.9 | 2 | 0.6 | 55 | 4 | 12 | 0.45 | 0.86 | 0.4° | £47.98 | 5 days | |
| ESTNB2009-16-04 | 0.9 | 2 | 0.6 | 60 | 4 | 16 | 0.45 | 0.86 | 0.4° | £50.85 | 5 days | |
| ESTNB2009-18-04 | 0.9 | 2 | 0.6 | 65 | 4 | 18 | 0.45 | 0.86 | 0.4° | £52.78 | 5 days | |
| ESTNB2009-20-04 | 0.9 | 2 | 0.6 | 65 | 4 | 20 | 0.45 | 0.86 | 0.4° | £52.78 | 5 days | |
| ESTNB2009-22-04 | 0.9 | 2 | 0.6 | 65 | 4 | 22 | 0.45 | 0.86 | 0.4° | £52.78 | 5 days | |
| ESTNB2009-24-04 | 0.9 | 2 | 0.6 | 70 | 4 | 24 | 0.45 | 0.86 | 0.4° | £55.65 | 5 days | |
| ESTNB2010-6-04 | 1 | 2 | 0.8 | 50 | 6 | 6 | 0.5 | 0.94 | 0.4° | £44.03 | 5 days | |
| ESTNB2010-8-04 | 1 | 2 | 0.8 | 55 | 6 | 8 | 0.5 | 0.94 | 0.4° | £44.03 | 5 days | |
| ESTNB2010-10-04 | 1 | 2 | 0.8 | 55 | 6 | 10 | 0.5 | 0.94 | 0.4° | £44.03 | 5 days | |
| ESTNB2010-10-09 | 1 | 2 | 0.8 | 55 | 6 | 10 | 0.5 | 0.94 | 0.9° | £44.03 | 5 days | |
| ESTNB2010-15-09 | 1 | 2 | 0.8 | 60 | 6 | 15 | 0.5 | 0.94 | 0.9° | £44.03 | 5 days | |
| ESTNB2010-20-04 | 1 | 2 | 0.8 | 65 | 6 | 20 | 0.5 | 0.94 | 0.4° | £47.08 | 5 days | |
| ESTNB2010-20-09 | 1 | 2 | 0.8 | 55 | 6 | 25 | 0.5 | 0.94 | 0.9° | £47.08 | 5 days | |
| ESTNB2010-25-09 | 1 | 2 | 0.8 | 70 | 6 | 25 | 0.5 | 0.94 | 0.9° | £47.08 | 5 days | |
| ESTNB2010-30-04 | 1 | 2 | 0.8 | 75 | 6 | 30 | 0.5 | 0.94 | 0.4° | £49.13 | 5 days | |
| ESTNB2010-30-09 | 1 | 2 | 0.8 | 75 | 6 | 30 | 0.5 | 0.94 | 0.9° | £49.13 | 5 days | |
| ESTNB2010-35-09 | 1 | 2 | 0.8 | 80 | 6 | 35 | 0.5 | 0.94 | 0.9° | £51.18 | 5 days | |
| ESTNB2010-40-09 | 1 | 2 | 0.8 | 85 | 6 | 40 | 0.5 | 0.94 | 0.9° | £53.23 | 5 days | |
| ESTNB2010-50-09 | 1 | 2 | 0.8 | 95 | 6 | 50 | 0.5 | 0.94 | 0.9° | £56.30 | 5 days | |
| ESTNB2010-60-09 | 1 | 2 | 0.8 | 105 | 6 | 60 | 0.5 | 0.94 | 0.9° | £59.38 | 5 days | |
| ESTNB2010-70-09 | 1 | 2 | 0.8 | 115 | 6 | 70 | 0.5 | 0.94 | 0.9° | £63.45 | 5 days | |
| ESTNB2015-8-04 | 1.5 | 2 | 1.35 | 55 | 6 | 8 | 0.75 | 1.42 | 0.4° | £44.03 | 5 days | |
| ESTNB2015-10-04 | 1.5 | 2 | 1.35 | 55 | 6 | 10 | 0.75 | 1.42 | 0.4° | £44.03 | 5 days | |
| ESTNB2015-12-04 | 1.5 | 2 | 1.35 | 55 | 6 | 12 | 0.75 | 1.42 | 0.4° | £44.03 | 5 days | |
| ESTNB2015-15-09 | 1.5 | 2 | 1.35 | 60 | 6 | 15 | 0.75 | 1.42 | 0.9° | £44.03 | 5 days | |
| ESTNB2015-20-09 | 1.5 | 2 | 1.35 | 65 | 6 | 20 | 0.75 | 1.42 | 0.9° | £47.08 | 5 days | |
| ESTNB2015-30-09 | 1.5 | 2 | 1.35 | 75 | 6 | 30 | 0.75 | 1.42 | 0.9° | £49.13 | 5 days | |
| ESTNB2018-4-04 | 1.8 | 2 | 1.6 | 50 | 6 | 4 | 0.9 | 1.73 | 0.4° | £45.25 | 5 days | |
| ESTNB2018-8-04 | 1.8 | 2 | 1.6 | 50 | 6 | 8 | 0.9 | 1.73 | 0.4° | £47.08 | 5 days | |
| ESTNB2018-12-04 | 1.8 | 2 | 1.6 | 55 | 6 | 12 | 0.9 | 1.73 | 0.4° | £47.08 | 5 days | |
| ESTNB2018-16-04 | 1.8 | 2 | 1.6 | 60 | 6 | 16 | 0.9 | 1.73 | 0.4° | £49.13 | 5 days | |
| ESTNB2018-20-04 | 1.8 | 2 | 1.6 | 65 | 6 | 20 | 0.9 | 1.73 | 0.4° | £51.18 | 5 days | |
| ESTNB2018-24-04 | 1.8 | 2 | 1.6 | 65 | 6 | 24 | 0.9 | 1.73 | 0.4° | £51.18 | 5 days | |
| ESTNB2018-28-04 | 1.8 | 2 | 1.6 | 70 | 6 | 28 | 0.9 | 1.73 | 0.4° | £51.18 | 5 days | |
| ESTNB2018-32-04 | 1.8 | 2 | 1.6 | 70 | 6 | 32 | 0.9 | 1.73 | 0.4° | £51.18 | 5 days | |
| ESTNB2018-36-04 | 1.8 | 2 | 1.6 | 75 | 6 | 36 | 0.9 | 1.73 | 0.4° | £53.23 | 5 days | |
| ESTNB2018-38-04 | 1.8 | 2 | 1.6 | 80 | 6 | 38 | 0.9 | 1.73 | 0.4° | £57.30 | 5 days | |
| ESTNB2018-40-04 | 1.8 | 2 | 1.6 | 80 | 6 | 40 | 0.9 | 1.73 | 0.4° | £57.30 | 5 days | |
| ESTNB2020-8-04 | 2 | 2 | 1.7 | 50 | 6 | 8 | 1 | 1.92 | 0.4° | £44.03 | 5 days | |
| ESTNB2020-12-04 | 2 | 2 | 1.7 | 55 | 6 | 12 | 1 | 1.92 | 0.4° | £44.03 | 5 days | |
| ESTNB2020-16-04 | 2 | 2 | 1.7 | 60 | 6 | 16 | 1 | 1.92 | 0.4° | £44.03 | 5 days | |
| ESTNB2020-20-04 | 2 | 2 | 1.7 | 65 | 6 | 20 | 1 | 1.92 | 0.4° | £46.05 | 5 days | |
| ESTNB2020-25-09 | 2 | 2 | 1.7 | 65 | 6 | 25 | 1 | 1.92 | 0.9° | £47.08 | 5 days | |
| ESTNB2020-30-04 | 2 | 2 | 1.7 | 70 | 6 | 30 | 1 | 1.92 | 0.4° | £49.13 | 5 days | |
| ESTNB2020-30-09 | 2 | 2 | 1.7 | 70 | 6 | 30 | 1 | 1.92 | 0.9° | £49.13 | 5 days | |
| ESTNB2030-8-04 | 3 | 2 | 2.5 | 50 | 6 | 8 | 1.5 | 2.86 | 0.4° | £44.03 | 5 days | |
| ESTNB2030-16-04 | 3 | 2 | 2.5 | 55 | 6 | 16 | 1.5 | 2.86 | 0.4° | £44.03 | 5 days | |
| ESTNB2030-20-04 | 3 | 2 | 2.5 | 60 | 6 | 20 | 1.5 | 2.86 | 0.4° | £46.05 | 5 days | |
| ESTNB2030-30-04 | 3 | 2 | 2.5 | 70 | 6 | 30 | 1.5 | 2.86 | 0.4° | £49.13 | 5 days | |
| ESTNB2030-40-04 | 3 | 2 | 2.5 | 80 | 6 | 40 | 1.5 | 2.86 | 0.4° | £53.23 | 5 days | |
| ESTNB2030-50-09 | 3 | 2 | 2.5 | 90 | 6 | 50 | 1.5 | 2.86 | 0.9° | £56.30 | 5 days | |
| ESTNB2030-60-09 | 3 | 2 | 2.5 | 100 | 6 | 60 | 1.5 | 2.86 | 0.9° | £59.38 | 5 days | |
| ESTNB2030-70-09 | 3 | 2 | 2.5 | 110 | 6 | 70 | 1.5 | 2.86 | 0.9° | £63.45 | 5 days | |
| ESTNB2040-20-10 Viewing | 4 | 2 | 8 | 70 | 8 | 20 | 2 | 3.86 | 1° | £53.28 | 5 days | |
| ESTNB2040-30-10 | 4 | 2 | 8 | 80 | 8 | 30 | 2 | 3.86 | 1° | £55.48 | 5 days | |
| ESTNB2040-40-10 | 4 | 2 | 8 | 90 | 8 | 40 | 2 | 3.86 | 1° | £58.80 | 5 days | |
| ESTNB2040-50-10 | 4 | 2 | 8 | 100 | 8 | 50 | 2 | 3.86 | 1° | £64.38 | 5 days | |
| ESTNB2040-60-10 | 4 | 2 | 8 | 110 | 8 | 60 | 2 | 3.86 | 1° | £68.80 | 5 days | |
| ESTNB2050-30-10 | 5 | 2 | 10 | 80 | 8 | 30 | 2.5 | 4.86 | 1° | £55.48 | 5 days | |
| ESTNB2050-40-10 | 5 | 2 | 10 | 90 | 8 | 40 | 2.5 | 4.86 | 1° | £58.80 | 5 days | |
| ESTNB2050-60-10 | 5 | 2 | 10 | 110 | 8 | 60 | 2.5 | 4.86 | 1° | £68.80 | 5 days | |
| ESTNB2060-30-10 | 6 | 2 | 12 | 80 | 8 | 30 | 3 | 5.86 | 1° | £55.48 | 5 days | |
| ESTNB2060-40-10 | 6 | 2 | 12 | 90 | 8 | 40 | 3 | 5.86 | 1° | £58.80 | 5 days | |
| ESTNB2060-50-10 | 6 | 2 | 12 | 100 | 8 | 50 | 3 | 5.86 | 1° | £64.38 | 5 days | |
| ESTNB2060-60-10 | 6 | 2 | 12 | 110 | 10 | 60 | 3 | 5.86 | 1° | £107.00 | 5 days | |
| ESTNB2060-70-10 | 6 | 2 | 12 | 120 | 10 | 70 | 3 | 5.86 | 1° | £118.88 | 5 days | |
| ESTNB2060-80-10 | 6 | 2 | 12 | 130 | 10 | 80 | 3 | 5.86 | 1° | £130.80 | 5 days | |
| ESTNB2080-50-10 | 8 | 2 | 14 | 110 | 10 | 50 | 4 | 7.86 | 1° | £107.00 | 5 days | |
| ESTNB2080-60-10 | 8 | 2 | 14 | 120 | 10 | 60 | 4 | 7.86 | 1° | £118.88 | 5 days | |
| ESTNB2080-70-10 | 8 | 2 | 14 | 130 | 10 | 70 | 4 | 7.86 | 1° | £130.80 | 5 days | |
| ESTNB2080-80-10 | 8 | 2 | 14 | 140 | 12 | 80 | 4 | 7.86 | 1° | £188.45 | 5 days | |
| ESTNB2100-60-10 | 10 | 2 | 18 | 130 | 12 | 60 | 5 | 9.86 | 1° | £175.00 | 5 days | |
| ESTNB2100-75-10 | 10 | 2 | 18 | 140 | 12 | 75 | 5 | 9.86 | 1° | £188.45 | 5 days |
No products match your filters.