This is the disk styli #A-5000-4187.
Disc styli are designed to inspect undercuts and grooves within bores which may be inaccessible to star styli. A range of disc styli offers a radius end roller to enable groove width measurement. Silver steel tips are heat treated and precision ground to a high tolerance.
|Thread mount (DG)||M2|
|Disk Depth (B)||3.1 mm|
|Roller Depth (L)||N/A|
|Stem diameter (DS)||N/A|
|Disk diameter (DK)||25.0 mm|
|Disk material||Silver Steel|
|Stem material||Stainless Steel|