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. 
 
Specs – 

Function:	to slip on stand, to insert into speaker
Height:	270 mm
Material:	steel
Special features:	patented expanding mandrel system »Ring Lock«; vibration-free connection due to moveable plastic splints; secured by locking screw
Suitable for tubing diameter of:	35 mm
Tube end(s):	»Ring Lock« diameter 35 to 37 mm
Type:	black
Weight:	0.66 kg