These hard to find Osiris stands are 18” high and made of a half inch thick steel top and bottom plates which are welded to two 3.5" diameter round pillars which can be filled with dry sand or lead shot to eliminate resonance. Each stand weighs in at over 35lbs prior to filling. Four large brass spikes couple the stands to the floor and allow for 2" worth of additional height adjustment. The top plates measure 8.5“*10” and the bottom plates are 10”*12”. The stands are finished in a durable satin black powder coat finish for a look that is better than the pics indicate. These two are in very good shape with only a couple of minor dings which I have not touched up.
Osiris Audionics went out of business around 2000. They made an excellent product but perhaps fell a bit short on running a business. Fabrication costs to duplicate this design probably would run close to $500 now.