Junior & Senior Stands: Designed for larger lighting fixtures these stands are built with steel legs and steel riser assemblies. These stands provide a stable rolling base for Junior and midsize lighting fixtures. Equipped with universal 1 1/8" Posi-V-Lock female with pop up 5/8" male receiver. The Senior Stands are made for fixtures weighing up to 88 pounds while the Brace Stand has three additional braces on the center column for increased support of heavier fixtures.