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ITP Straight Styli - Type A - Ruby Ball - M4 Thread x 77.5mm Overall Length - TKM405007077
| Styli Type | Type A |
| Thread Size | M4 |
| Ball Diameter (DK) | 5 |
| Overall Length (L) | 77.5 |
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Description
The ITP Straight Styli - Type A with Ruby Ball is a precision straight stylus designed for metrology and CMM probing. Built for everyday standard use, its lightweight yet rigid ceramic stem ensures stable, repeatable contact during measurements.
- Thread: M4 thread for secure, compatible mounting on standard stylus holders.
- Ball material: Ruby ball delivers hard, wear-resistant contact for accurate touch probing.
- Ball diameter: Available in Ø4.0 mm to Ø8.0 mm; other sizes can be requested via the configurator or by e-mail.
- Stem material: High-performance ceramic offering low weight with high rigidity to minimize deflection.
- Overall length: 77.5 mm, providing a balanced reach for common probing setups.
- Style: Straight stylus design optimized for consistent axial contact and predictable measurements.
Ideal for quality control, calibration labs, and manufacturing environments that rely on reliable, repeatable touch measurements. The combination of a lightweight ceramic stem and a durable ruby ball helps maintain precision over repeated use, while the standard M4 mounting ensures straightforward integration with most probes. For applications requiring different ball sizes, you can request Ø4.0–Ø8.0 mm options through the configurator or by email to tailor the stylus to your specific measurement tasks.
Part Numbers
- Protool Part Number
- ITP-TKM405007077
- 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.


