This is the M2 spherical disk styli #A-5555-0297. It has stainless steel base, a tungsten carbide stem and a ceramic disk.
Thread mount | M2 |
Disk Diameter (d) | 8.0 mm |
Length (L/Z) | 32.0 mm |
EWL (ML) | 19.0 mm |
Base Width (D) | 3.0 mm |
Stem Diameter (ds) | 1.5 mm |
Disk Width (B) | 1.5 mm |
Stem Material | Tungsten Carbide |
Mass | 1.0 g |