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

ITP Straight Styli - Type B - Ruby Ball - M3 XXT Thread x 20mm Overall Length - THM301005020/0,8

SKU:ITP-THM301005020/0,8

The ITP Straight Styli Type B with Ruby Ball is a reliable, everyday probing stylus designed for precision metrology tasks. With a rigid tungsten carbide stem and configurable ruby balls, it deli... Read more ↓
Styli TypeType B
Thread SizeM3 XXT
Ball Diameter (DK)1
Overall Length (L)20
Shank Diameter (DG)5
Measuring Length (ML)11
View all specifications ↓
£65.67
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 B with Ruby Ball is a reliable, everyday probing stylus designed for precision metrology tasks. With a rigid tungsten carbide stem and configurable ruby balls, it delivers repeatable measurements in tight features and demanding environments.

  • Thread: M3 XXT thread for secure attachment to standard stylus holders
  • Overall length: 20 mm
  • Stem material: Tungsten carbide for exceptional rigidity and long-term stability
  • Ruby ball sizes: Probes available with ruby balls from Ø0.3 mm to Ø1.0 mm
  • Stem configuration: Straight stem suitable for single- or multi-stepped configurations
  • Customization: Additional sizes can be requested via configurator or by email

This straight stylus is ideal for CMM probing, surface inspections, and micro-feature measurements. The ultra-rigid carbide stem minimizes deflection during contact, helping you achieve accurate, repeatable results across multiple cycles. Ruby balls provide low wear and stable contact geometry, extending stylus life while preserving measurement integrity. The ability to choose different ball diameters lets you tailor contact pressure and feature resolution to your specific part geometry—whether you’re capturing fine fillets with a Ø0.3 mm ball or handling broader surfaces with a Ø1.0 mm ball. For specialized needs, simply use the configurator or email to specify other sizes, ensuring the tool exactly fits your application without compromising performance.

Styli Type Type B
Thread Size M3 XXT
Ball Diameter (DK) 1
Overall Length (L) 20
Shank Diameter (DG) 5
Measuring Length (ML) 11
Neck Diameter (DS) 1
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.

★★★★★
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