This is the M3 disk and hollow ball styli #A-5003-7098.
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. Ceramic tips are lightweight, hardwearing and non-magnetic.
| Thread mount (DG) | M3 |
| Disk Depth (B) | 1.5 mm |
| Roller Depth (L) | N/A |
| Stem diameter (DS) | 4.0 mm |
| Disk diameter (DK) | 30.0 mm |
| Disk material | Ceramic |
| Stem material | Stainless Steel |
| Mass | 3.6 g |
