Flex Line FlexShooter Pro and FlexShooter Pro Black Edition Ballhead For medium and large sized lenses and cameras with a max load of 100 lbs. The FlexShooter Pro has a spring counter balance which will help to eliminate image creep. With a unique double ball system for simple horizon leveling, as well as an Arca Swiss mount, the FlexShooter Pro and FlexShooter Pro Black Edition are the perfect solution for even the longest lenses. What's included: -Arca Swiss-style two-way clamp -Adjustable friction for both balls -Precision bubble level built-in -Built-in spring balance for tilt movement Available in the Classic Original Edition or the all New All Black Edition!