This TA-2-LC Series 2 Leveling Base with Clamp from Really Right Stuff is designed for the Versa Series 2 tripods. The tripod's base locks down using the supplied hex key and holds the leveling base firmly inside the tripod.
Once the leveling base is attached, you now have a smooth moving half-ball with an adjustment range of ±15°, and with the large easy-to-read bull's-eye spirit level, it will enable you to level to the horizon every time. The base will support up to 25 lb, and you can secure your leveled position with the butterfly-shaped locking ring. An Arca-type compatible clamp, which enables the user to swap out different types of heads by placing an Arca-type plate on the bottom of panoramic, ball, and video heads, is located at the top of the leveling base.