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ITP Straight Styli - Type E - Ruby Ball - M5 Thread x 55mm Overall Length - FTM503511055
| Styli Type | Type E |
| Thread Size | M5 |
| Ball Diameter (DK) | 3.5 |
| Overall Length (L) | 55 |
| Shank Diameter (DG) | 11 |
| Measuring Length (ML) | 10 |
Learn more about Klarna
ITP Straight Styli Type E with Ruby Ball is a precision probing stylus designed for high-accuracy measurements in metrology and CMM environments. Built for demanding applications, it combines a rigid tungsten carbide stem with a premium ruby ball to deliver repeatable contact measurements.
- Thread: M5 threaded connection for secure, quick mounting on standard probing systems.
- Overall length: 55 mm from tip to base, providing a compact, versatile probing profile.
- Stem material: Tungsten carbide core for exceptional rigidity and long-term dimensional stability.
- Ball tip: Ruby ball crafted from high-quality ruby to resist wear and maintain precision over many cycles.
- Tip sizes: Available in ruby ball diameters from Ø1.0 mm up to Ø3.5 mm to match different feature sizes.
- Customization: Other dimensions can be configured via the configurator or requested by email to fit your equipment.
- Product code: FTM503511055
This stylus minimizes measurement drift through a reinforced, long-body design and a wear-resistant ruby ball, enabling reliable, repeatable readings across parts and setups. Its M5 interface simplifies integration with widely used probing systems, while the option to choose different ruby ball diameters lets you tailor the tip to the feature being measured—reducing the risk of over- or under-dimensioning. Ideal for precision inspection in manufacturing, tooling, and QA environments, it supports consistent results in tight tolerances and high-volume workflows.
| Styli Type | Type E |
| Thread Size | M5 |
| Ball Diameter (DK) | 3.5 |
| Overall Length (L) | 55 |
| Shank Diameter (DG) | 11 |
| Measuring Length (ML) | 10 |
| Neck Diameter (DS) | 2.5 |
| Stem Material | carbide |
| Base Material | titanium |
| Prob Ball Material | ruby |
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.


