STATE-OF-THE-ART with: CD Players Digital Transports Turntables Amps and Preamps Power Conditioners The industry standard- guaranteed to outperform any other bearing device Mirror-polished cup and one-ball design for lowest chatter possible Exclusive matrix improves coupling to all surfaces Harder-than-steel outer layer reduces resonance Rave-reviewed around the world Patented BEWARE OF COUNTERFEITS! ROLLERBLOCK® SERIES 2+   Famous from Bangkok to Brooklyn, the Rollerblock® generated an entire sub-industry of ball bearing isolation devices. Unmatched precision and patented design maintain it as today's standard of excellence.        BETTER SOUND with: Speakers Amplifiers CD/SACD players and Turntables Shelves All Components Symposium quality and performance at an affordable price Exclusive dual-cup, "double stack" design High quality aircraft aluminum construction Same cup sphericity and ball diameter as Series 2 Rollerblock Attractive, black anodized finish 1/4-20 threaded hole allows secure mounting BEWARE OF COUNTERFEITS! ROLLERBLOCK® JR. and ROLLERBLOCK® JR.HDSE Symposium's "Son of Rollerblock" is an affordable way to add lateral isolation and coupling to shelves, platforms, CD players, turntables, loudspeakers, and more. ALSO AVAILABLE IN HDSE "Special Edition"