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ITP Straight Styli - Type A - Ruby Ball - M3 Thread x 22.25mm Overall Length - THM302504022
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 2.5 |
| Overall Length (L) | 22.25 |
| Shank Diameter (DG) | 4 |
| Measuring Length (ML) | 14.75 |
Learn more about Klarna
The ITP Straight Styli – Type A (THM302504022) is a precision straight stylus designed for reliable everyday probing. With a carbide stem for exceptional rigidity and a high-quality ruby ball tip, it delivers consistent, repeatable contact in a compact 22.25 mm form factor.
- Connection: M3 thread for secure attachment to compatible probe heads and stylus holders.
- Overall length: 22.25 mm, providing a compact probe reach for tight or recessed features.
- Stem material: Solid carbide for superior rigidity and long-term dimensional stability.
- Tip material: Ruby ball tip available in sizes from Ø0.5 mm to Ø6.0 mm for precise contact and minimal wear.
- Customization: Additional ruby-ball sizes can be requested via the configurator or by email.
- Applications: Ideal for routine measurement, surface scanning, digitization, and quality control tasks with CMMs and probe systems.
Designed to improve measurement accuracy and consistency, this stylus minimizes deflection during probing and maintains a stable probing axis across multiple sessions. The carbide stem resists wear under repeated use, while the ruby ball tip provides smooth, repeatable contact with a wide range of part geometries. Whether you're probing small features, delicate surfaces, or complex contours, the Type A straight stylus offers dependable performance and flexible tip sizing to match your workflow.
| Styli Type | Type A |
| Thread Size | M3 |
| Ball Diameter (DK) | 2.5 |
| Overall Length (L) | 22.25 |
| Shank Diameter (DG) | 4 |
| Measuring Length (ML) | 14.75 |
| Neck Diameter (DS) | 2 |
| Stem Material | carbide |
| Base Material | stainless steel |
| 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.


