This is the M4/M2 adaptor #A-5004-7595. Stylus adaptors are designed to allow styli with different thread sizes to be built into stylus configurations.
Previous part number: M-5000-6622
| Male/Female Thread | M4/M2 |
| Length | 5.0 mm |
| Material | Stainless Steel |
| Mass | 1.5 g |
