You need this bungee between your float line and your float to act as a shock absorber. It stretches 3x it's length so your shaft wont pull out on fish making a run.
It also works great between floats when running a multi float system.
It contains a 1600lb continuous spectra core with tuna clip mounted on both ends and it's about 6' long. Made with synthetic bungee material to last many seasons.