From Liquid Force
The wave loop is optimized for use with a rope spreader bar delivering a loose and free feel. A stainless loop sleeve makes for frictionless movement and aids in decreasing the wear of the rope adding to your spreader bar life. The compact size allows for the longest accessible depower while holding the bar. The wave loop is not only the choice of kite surfing specialists, but also is a go to for many hydrofoil enthusiasts. The wave loop is only for use with rope style spreader bars.