Light weight extension for mounting on VAST adapter plates. Adjusts to any radial angle. Made of Therm-X carbon fiber tubing with machined titanium end fittings. There are five M5 tapped holes in the cube. L1 = 96.50 mm, L2 = 50.0 mm. Weight is 62.92 grams. Compare to Zeiss 626107-2050-110.