GyroVu Heavy-Duty Dual 11"" Articulated Arms give you greater leverage for using a monitor or accessory with a gimbal. Well designed tightening mechanisms will ensure your monitor or accessory will stay put where you want them. The articulating arms have native 1/4""-20 studs on the ends and can be used in various other applications if removed. They use a rosette center locking mechanism, which prevents slipping due to wear or insufficient tightening. A wingnut in the center of each arm tightens all three joints of the arm at the same time..