The Ultimate TS-80B Standard Speaker Stand has a built-in top-hat adapter that accommodates both 1-3/8" and 1-1/2" speaker sockets. It's glass-reinforced polycarbonate telescoping collar has a die-cast metal clamp for maximum security and durability, and is designed to tighten easily. The telescoping tube stop increases safety and prevents accidental pulling out of the center tube. The TS-80B's large diameter main tube and die-cast metal leg collar clamp provide maximum strength and stability. The leg collar comes preset to proper tension. Height adjustable from 3'8" to 6' 7", the TS-80B has a load capacity of 150lb.