Sterling Audio STSM3 Shockmount for ST31/ST33/ST44 Designed for Sterling Audio ST31, ST33 and ST44 microphones Works with all mics with body diameters between 65" and 1 25" The STSM3 shock mount is specially designed for the Sterling Audio ST31, ST33 and ST44 microphones but also works with all thin-bodied mics with a diameter between