Glass-reinforced polycarbonate telescoping collar has a die-cast metal clamp for maximum security and durability Accommodates 1-3/8 and 1-1/2 speaker sockets. Height: 3'8-6'7. Load capacity: 150 lbs. Lifetime guarantee. Ultimate Support TS-80B Standard Speaker Stand Specifications: * Accommodates both 1-3/8 and 1-1/2 speaker sockets * Height: 3'8 - 6'7 * Load capacity: 150 lbs.