These brackets are a marvel of engineering - solid aluminium and totally rock solid when extended.
Not required now due to moving my BC 6-26 out of an alcove & reverting back to the original bracket.
Made by E- vision. Product is here
Bracket similar to the stb product here
Beocentre 6-26, DVD1, beolab 3500, beocom4, beotalk 1100.