Steel adapter sleeve attaches to speaker stands with tubing diameter of 35 mm, mounts with a locking screw. Integrated unique patented expanding mandrel system which provides a tight and firm fit for the speaker. The moveable plastic splints separate the speaker from the stand creating a vibration-free connection. Ring Lock System. Material: steel. Height: 270 mm. Tube end(s): »Ring Lock« diameter 35 to 37 mm. Weight: 0,66 kg. Colour: Black.