This versatile OptiTrack Calibration Wand milled from high-grade aluminium is ideal for large and medium volumes with multiple configurable marker sets to adapt to your needs. The CW-500 Calibration Wand Kit includes: Wand Handle: ¼-20 mount, Handle extension thread, Three M4 15.9 mm (5/8") markers with compatible posts for 500 mm position, Three M4 12.7 mm (1/2") markers with compatible posts for 250 mm position, Adjustable: vertical or horizontal wanding position, and Storage box with foam liner.