This is the M4/M3 stylus adaptor #A-5000-7753. Stylus adaptors are designed to allow styli with different thread sizes to be built into stylus configurations. A ceramic stem is lightweight yet very stiff and offers built-in crash protection.
|Thread mount (A)||M4|
|Overall length (B)||100.00 mm|
|Stem Diameter (D)||4.50 mm|
|Mount to (C)||M3|