Extension rod from Starline series that can be used with Konig & Meyer products including a threaded bolt set 18864 to mount microphone booms to the Baby-Spider Pro 18840 and Spider Pro 18860 keyboard stands when the laptop rest 18868 is installed. The combination of laptop rest and boom arm is only applicable with laptops up to 15” maximum screen size. The rod features a 2-piece folding design and is made of steel. It offers a clutch height adjustment from 330 to 550 mm and provides a 3/8” threaded connector. Weight: 0.387 g. Black colour.