This adapter is a favorite for trying to find a suitable mounting point on drop ceilings. The drop ceiling mount, also commonly called a scissor mount, attaches to an intersection in the metal grid that supports the tiles. It remains a must have accessory for shooting in office buildings. The KD302012 features a 5/8" (16mm) receiver with metal locking knob will accept any light fixture or accessory with a 5/8" (16mm) stud.