This is a Manfrotto Alu Master Air Cushioned Light Stand Quick Stack 3-Pack . Each stand in this set is a 4 section, 3 riser aluminum light stand with a black anodized finish that extends to a maximum height of 12′ (4 m). Each stand features QSS (Quick Stack System), which allows the 3 stands to be stacked and bolted together when they are closed for storage or transport. Air Cushioned Protects equipment and fingers from damage or injury if a section is not properly locked. Aluminum Locking Collars Made from pressure die cast aluminum Versatile Top Stud Fitted with a 5/8″ top stud that has a 3/8″ threaded, and a removable 1/4″-20 threaded top Quick Set Up Sets up easily in a matter of seconds Double Braced Leg Base Provides extra stability giving the stand more strength