FITTEST 50mm leveling plate can be easily installed between ball head and the tripod platform. It convenient to observe the level when opening the tripod; 50mm diameter of the horizontal disc, used to satisfy most bases; 15mm diameter of the bubble level, clear and intuitive; One piece metal Aluminum plate. Product Description:
Fits for any ball head with base diameter no larger than 50mm.
Gives an accurate spirit level reading for the base of your ball head.
Degree marks on your ball head remain visible.
Can accommodate any 3/8" or 1/4" tripod stud.
Center hole is 10mm in diameter.