The Gravity T-Bar facilitates mounting two loudspeakers on a single stand. It is made of heavy-duty steel with a black powder-coating finish and securely attaches to all 35 mm poles. Width is fully adjustable from 31 to 49 cm.
Gravity SAT 36 B LautsprechergabelThis thing does what it's supposed to do and does it well. I have no complaints so far. I like how you can put the Allen key to its own little compartment at the end of the t-bar, so you won't lose it.
I use this one with K&M stands.