ITP Disc Styli stainless steel Prob Ball with a 20 mm ball diameter and M5 threaded shank is a precision disc probe designed for measuring large inside diameters and integrated undercuts. Built for metrology professionals and shop-floor technicians, it provides a sturdy, reliable contact point that fits standard probe heads.

• Material: Stainless steel construction for durability and corrosion resistance in demanding workshop environments.
• Ball diameter: 20 mm contact ball delivers stable, repeatable measurements on large internal features.
• Thread: M5 threaded shank for secure attachment to compatible probe heads and fixtures.
• Type: Type N designation for standardized use with spherical disc probes.
• Geometry: Disc/spherical disc configuration optimized for probing large inside diameters and integrated undercuts.
• Direction note: Normal disks are unsuitable for probing in the Z direction unless the disc includes radius end rollers.

This disc-style probe accessory helps streamline the measurement of bore holes, cavities, and internal features that are difficult to reach with standard probes. The robust stainless steel build supports repeated usage in calibration and inspection routines, while the 20 mm ball diameter provides a reliable contact surface for accurate readings. Use it to improve data quality in quality control workflows, coordinate measuring machine (CMM) setups, and other tactile probing applications where large internal geometries and undercuts must be captured with precision.