The 51800-L Barefoot International Carabiner is just the carabiner (2 needed) that is used with the strap to the tower that the rear cable for the Tower Extension clamps to your tower. This is also the same carabiner used for any Barefoot International boom or Fly High.
The 51800-L Barefoot International Carabiner is only the carabiner (2 needed) for the support cable for the new Barefoot International Pro X Series Tower Extension Super Fly High (patented) which is the most extreme new product to hit the market. It fits all towers and allows riders to go bigger and land softer. It also helps you learn new tricks at slower speeds which will increase your confidence while reducing the punishment of crashing. Trying to land that first raley? Slow the boat to 18 mph and give it a rip. It also folds down entirely and can remain attached while your tower is collapsed, so there is no need to remove it prior to parking your boat on the lift.
Barefooting changed forever! What if you could barefoot behind the boat and feel like you were on the boom? The Barefoot International Pro X Series Tower Extension Super Fly High makes that possible. Barefooting can be done as slow as 23mph! The Barefoot International Pro X Series Tower Extension Super Fly High raises the rope from 7 feet to 14 feet off the water when mounted on top of our wakeboard tower! This upward pull makes you feel about 30% lighter and is 60% easier than barefooting down at pylon height.
Check the part numbers for proper fitting
W2927 fits towers 2″ in diameter or less
W2931 fits towers 2¼”-2½” in diameter
W2932 fits towers 2 7/8″ and 3″ in diameter