These stands have a thick, tempered glass base, hollow steel support post that can be filled with granular material for additional mass and damping, and a heavy metal top plate with soft pads for traction and loudspeaker finish protection.
The bottoms of the bases are painted black, which is an attractive look. The metal parts have a very durable, powder coated finish.
The stands are supplied with carpet spikes; rubber footers are optional.
Assembly is easy -- just two bolts, tools included, plus screwing on the footers.
They're extremely sturdy, and can hold 135 lbs each.
When ordering these for JansZen Carmelita loudspeakers, consider that the choice of height depends on your seating. The stands should be approximately 12" [30 cm] lower than your ear height is when seated.