OptiTrack Marker Post M4 mount (25mm)

Aluminum M4 threaded marker posts, offered in four lengths to prevent occlusion in various applications and use cases. Compatible with M4 markers. Includes a user removable M4 .7 × 10 mm set screw to convert the marker post into a male/female extension. Use a 2 mm or 5/64" hex key to remove the set screw.