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ITP Straight Styli - Type B - Ruby Ball - M3 XXT Thread x 20mm Overall Length - THM300505020
| Styli Type | Type B |
| Thread Size | M3 XXT |
| Ball Diameter (DK) | 0.5 |
| Overall Length (L) | 20 |
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Description
ITP Straight Styli Type B with Ruby Ball delivers precise, reliable probing for metrology and inspection tasks. Designed for professionals who need a rigid, consistent contact point, this stylus combines a tungsten carbide stem with a small ruby ball and a compact 20 mm overall length for versatile use.
- Thread: M3 XXT thread compatibility for secure attachment to compatible probes
- Overall length: 20 mm total length, optimized for tight measurement spaces
- Stem material: Extremely rigid tungsten carbide for high stiffness, wear resistance, and repeatable readings
- Stem geometry: Straight design that can be configured as single‑step or multi‑stepped to suit your setup
- Ruby contact ball: High‑quality ruby ball ranging from Ø0.3 mm to Ø1.0 mm (Type B) for precise, low‑deformation contact
- Custom sizing: Other ruby ball sizes or stem configurations available on request via configurator or by email
This stylus is ideal for CMM probing, surface inspection, fixture alignment, and calibration tasks where consistent contact and minimal wear are critical. The tungsten carbide stem minimizes deflection under load, delivering stable measurements, while the ruby ball provides durable, gentle contact with workpieces. With its compact form and precise threading, it integrates smoothly into existing probe setups, and the option to tailor ball size or stem configuration helps you optimize performance for your specific measurement needs.
Part Numbers
- Protool Part Number
- ITP-THM300505020
- Brand
- ITP
- Category
- Styli
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.


