Hand spliced 500lb spectra. Float line loop is spliced into the spectra for the best and most secure connection. No waxed rigging floss that will break off or chafe the main line.
Loops on each end have a 220lb stainless wind-on swivel that can be used to tie both ends of the main line to instead of the loop to loop connection. If a loop to loop connection is preferred these swivels can be cut off and the connection to the main line can be made loop to loop.