FS: 3 piece set of Spiral Groove SG1 machined isolation feet threaded for the IMMEDIA RPM-2 turntable. This is a fantastic upgrade over the standard cone feet on the original RPM tables. The threaded bolt is removable and can accept threaded reducers of different thread size/pitch, imperial or metric. email me for details. The footers themselves are machined from stainless in two piece with an elastomer decoupling both halves. The improvement is not subtle and elevates the already awesome performance more than a few notches. $200 is a paltry sum for the level of improvement it brings.