Really quality pair of heavy duty Monitor stands, standing 92cm tall.
The speaker base dimensions are W165mm x D190mm and the floor bases are a very sturdy W300mm x D300mm.
The bases have threaded inserts so you can screw spikes in if you like (not included). By the look of it you could remove the bases and fill with sand if you wanted to add even more mass.
These are perfect for the home production studio.
The stands are a little marked up (please see photos) but a functionally solid.