Despite their lightweight aluminum construction (5 lbs.each), Yamaha's SS238C tripod stands safely support up to 70 lbs. each. Dual locking height adjustment mechanisms clamp both the inner 1-3/8" (35mm) tube and a permanently attached pin that slips through pre-punched holes. Sockets built into Yamaha's Club, BR, MSR, DXR and DSR cabinets make them "speaker-stand ready." SS238C stands are boxed and sold as pairs and include a padded canvas carry bag. Height is adjustable from 44" to 80".