The ST45 is a reference table stand for easiest installation and takedown of mobile sound systems. It is made of one solid piece of metal which gives it a firm stand on every table. The massive base plate and special shock-absorbing rubber feet effectively eliminate footfall noise. The ST45 table stand can be teamed up with the SA60 stand adapter,also for use with all Discreet Acoustics Modular Plus Series powering modules. Diameter: 11.5 cm/4.5 in.