This is the M5 stylus for Zeiss #A-5555-0042. This is a ceramic styli. It has a titanium base and a ruby ball.
|Ball Diameter (DK)||6.0 mm|
|Overall length (L)||54.0 mm|
|Stylus Base Width (DG)||11 mm|
|EWL (ML)||44.0 mm|
|Stem diameter (DS)||3.5 mm|