This stand is Riseyour TRAKTOR S4 MK3 to the useable STANDARD MIXER HEIGHT. HORIZONTAL DJ RISER (STAND) with RUBBER PADS. This system have 4 pieces, you need to assemble it. Just push 2 aluminium bars in one of legs holes until end, then put the two aluminium stabilizer ends into anoter legs holes as shown on pictures.
eBay