Leofoto H50 Extended Adapter for Window Clamp
The H50 is a 51mm tall adapter that accepts 3/8th mounting. There is a 3/8th stud on top and a 3/8th mounting socket on the bottom. It's made of black anodized 6061-T6 aluminum.
Height: 51mm / 2 inches
DIameter: 73mm / 2.87 inches
Weight: 260g / 0.57 lbs