Drywall flat box handles are attached to drywall flat boxes to allow you to control movement and position of the flat box, as well as helping you to apply pressure to push out the joint compound out of the flat box. Flat box handles are for the most part interchangeable with other manufacturers, with the exception of TapeWorm. Extendable flat box handles allow you to use the same handle for both walls and high ceilings. Short flat box handles allow you to get into tight spaces like hallways and closets, and can also be useful for stairways and scaffold work.
