The ITP Disc Styli stainless steel / ruby Prob Ball with M5 thread and a 63.5 mm ball diameter is a precision disc probe designed for metrology tasks that involve measuring large inside diameters and integrated undercuts. This Type M disc stylus combines a durable stainless steel base with a ruby-enhanced contact for reliable, repeatable measurements in CMM workflows.

• Thread size: M5
• Ball diameter: 63.5 mm
• Overall length: 7 mm
• Base material: Stainless steel
• Prob Ball material: Stainless steel / ruby
• Disc type: Type M
• Applications: Probing internal features and undercuts on complex geometries
• Z-direction guidance: Normal disks are unsuitable for probing in the Z direction (except discs with radius end rollers)

This disc stylus is ideal for metrology specialists who need accurate probing of internal features and undercuts in tight or awkward cavities. The robust stainless steel construction ensures longevity in regular inspection routines, while the ruby-inlaid ball provides a hard, wear-resistant contact point for consistent results. The M5 mounting thread offers straightforward integration with compatible probes, enabling precise measurements across repetitive inspection tasks. When Z-direction probing is required beyond a standard disk, consider discs designed with radius end rollers to extend reach and accessibility.