The Revic WM1 Optics Car Window Mount uses a standard 1/4x20 thread to attach your favorite glassing head. When you have to cover country fast or the weather is too harsh, the Revic window mount will keep you stable from the vehicle. The ergonomic clamping knob and rubberized clamping face make attaching it a breeze. FeaturesClamp to edges up to 0.86" thick2.44" Height8.81 Max LoadHard Anodization