Yamaha SS238C Aluminum Tripod Speaker Stands Despite their lightweight aluminum construction (5 lbs. Each), SS238C tripod stands safely support up to 70 lbs. each. Dual locking height adjustment mechanisms clamp both the inner 1-3/8-Inch(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 -Inch speaker-stand ready.-Inch Height is adjustable from 44 to 80