Made from stable cast aluminium. Total length 21.5 cm. The diameter of the upper and lower base is 70mm. Threaded connections each 3/8″ photo thread. The upper adapter can be separated from the column with 3 knurled screws in order to be able to attach it more easily to a mount. Scope of delivery: Extension column 21.5 cm! Power supply and batteries are not included in the scope of delivery!