Please log in here to access all benefits, including multibuy discounts and faster checkouts.

ITP Straight Styli - Type S - Ruby Ball - Without Thread x 26.5mm Overall Length - KTM501510026

SKU:ITP-KTM501510026

The ITP Straight Styli Type S with Ruby Ball is a precision, threadless stylus designed for flexible probing in metrology setups. Built for technicians and engineers using clamp-based measurement... Read more ↓
Styli TypeType S
Thread SizeWithout
Ball Diameter (DK)1.5
Overall Length (L)26.5
Shank Diameter (DG)N/A
Measuring Length (ML)N/A
View all specifications ↓
£43.20
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The ITP Straight Styli Type S with Ruby Ball is a precision, threadless stylus designed for flexible probing in metrology setups. Built for technicians and engineers using clamp-based measurement systems, it delivers reliable contact with a durable, long-lasting tip.

  • Design: Straight (Type S) geometry for direct probing paths in tight or awkward spaces
  • No-thread design: Threadless interface that reduces binding and increases Flex when navigating challenging features
  • Tungsten carbide stem: Highly rigid, wear-resistant shaft that supports either single- or multi-stepped configurations
  • Ruby ball tips: Available in sizes from Ø1.35 mm to Ø10.0 mm; other sizes can be requested via the configurator or by e-mail
  • Clamp-holder compatibility: Designed to work with the appropriate clamp holder for secure, stable mounting
  • Overall length: 26.5 mm, ideal for compact fixtures and tight measurement setups
  • Product Code: KTM501510026

This ruby-ball stylus minimizes wear on both the tip and the workpiece while delivering repeatable contact across repeated scans. The non-threaded design reduces interference in constrained fixtures, and the tungsten carbide stem maintains high accuracy under demanding conditions. Choose the ruby-ball size that matches your feature geometry, and request additional sizes if needed through the configurator or by e-mail.

Styli Type Type S
Thread Size Without
Ball Diameter (DK) 1.5
Overall Length (L) 26.5
Shank Diameter (DG) N/A
Measuring Length (ML) N/A
Neck Diameter (DS) 1
Stem Material carbide
Base Material N/A
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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy