TeleLock Series Lift-assist Aluminum Speaker Stand with Integrated Speaker Adapter - Extra Height & Leveling Leg. The TeleLock Series speaker stands from Ultimate Support are extraordinarily strong yet lightweight due to its over-sized heavy wall aluminum tubing. They're everything you'd expect from an Ultimate Support speaker stand - they're strong, sturdy, lightweight, 100% field serviceable, and easy to set up and take down. However, the TeleLock collar gives the user the ability to safely raise or lower the stand WHILE a speaker is on it thanks to the Auto-lock technology that securely grips the telescoping tube in place as you set its height.SpecsHeight: 5'2"- 9'2" (1575 mm - 2794 mm)Weight: 10.2 lbs. (4.5 kg)Base Diameter: 62" (1575 mm)Telescoping Tube Diameter: 1.5 (38 mm)Leveling-leg length 40" - 53" (1016 mm - 1346 mm)Adapter Diameter: 1.375" (35 mm)Load Capacity: 150 lbs. (68.2 kg)Folded: 57.5" x 6" (1461 mm x 152 mm).