This convenient adapter mounts between the tripod and tripod head so that the head can be leveled similar to how a professional video head is leveled. The all-metal Slik Leveling Unit-II acts like a professional “Bowl Mount” on a video tripod and allows for a total of 15 degrees (+/- 7.5 degrees) of tilt in any direction. This adapter is perfect for quick adjustment to the level of the tripod head. The Leveling Unit II has simple one lock ring operation to easily lock and release the swivel bowl for leveling. There may be times when it is important to have the base of the tripod head level and the Leveling Unit-II has built-in bubble level to ensure a level platform to work from.