Loudspeaker stands with a central tube steel structure of 90-mm diameter that can be filled with acoustic damping material. All models are supplied with adjustable spikes for accurate floor coupling and Blu-Tack for accurate loudspeaker and stand coupling. -stove-finished with plastic soundproofing paint -three different heights: 50 - 60 - 70 cm (19.7- 23.6 - 27.6 inches) -upper plane: 17x20 cm and 18x22 cm (7.9 x 6.7 inch and 7-x 8.7 inches)