The Ultimate Support SP-90 Tele-Lock speaker pole is built to securely grip the telescoping tube in place as you set its height. The SP-90 speaker poles feature an expanding cylinder system that will firmly fit multiple speaker sockets from 1-3/8" to 1-1/2" diameter.
TeleLock Series speaker poles from Ultimate Support are extraordinarily strong, yet lightweight, thanks to their oversized, thick-walled aluminum tubing. They're everything you'd expect from an Ultimate Support speaker stand: Strong, sturdy, lightweight, 100% field serviceable, and easy to set up and take down.