This is the M3 ceramic stylus extension #A-5003-0075.
Extensions can be used when measuring very deep features and bores or probing points that are difficult to access. The ceramic stem is lightweight yet very hardwearing.
| Thread mount | M3 |
| Length (LE) | 50.0 mm |
| Stem Diameter (DGE) | 4.0 mm |
| Stem material | Ceramic |
| Mass | 2.95 g |
