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ITP Straight Styli - Type A - Ruby Ball - M5 Thread x 30mm Overall Length - THM504011030
| Styli Type | Type A |
| Thread Size | M5 |
| Ball Diameter (DK) | 4 |
| Overall Length (L) | 30 |
| Shank Diameter (DG) | 11 |
| Measuring Length (ML) | 20 |
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ITP Straight Styli – Type A with a ruby ball and M5 thread, designed for precise, repeatable probing in everyday metrology tasks. This compact stylus (30 mm overall length) is built for professionals who demand consistent contact and dependable performance from a ready-to-use measurement accessory.
- Thread: M5 mounting thread for easy integration with standard probes and fixtures (model THM504011030).
- Tip material: Premium ruby ball at the tip for hard-wearing, low-friction contact and high measurement fidelity.
- Ball diameter options: Ruby balls available from Ø2.0 mm to Ø10.0 mm; other sizes can be requested via the configurator or by e-mail.
- Stem material: Carbide stem delivering exceptional rigidity to minimize deflection during probing.
- Overall length: 30 mm, providing practical reach in tight inspection spots while maintaining balance and control.
This straight stylus is built to support consistent, high-quality measurement data. The rigid carbide body and durable ruby ball work together to reduce measurement variability, extend tip life, and maintain accuracy across repeated use. Ideal for routine probing in QC labs, fixture-based inspections, and coordinate measurement workflows, it pairs with compatible equipment to streamline setup and boost productivity. If your application requires a different ruby ball size, you can request additional diameters through the configurator or by email to tailor the tool to your specific tasks.
| Styli Type | Type A |
| Thread Size | M5 |
| Ball Diameter (DK) | 4 |
| Overall Length (L) | 30 |
| Shank Diameter (DG) | 11 |
| Measuring Length (ML) | 20 |
| Neck Diameter (DS) | 2 |
| 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.


