5/16" x 70 ft. Double Braid Standard White/Blue tracer Dacron/Polyester Sail Halyard.  Made in the USA !   Has a spliced in 2 1/2" Stainless Steel Swivel Snap Shackle.   The splice  is "properly" spliced with a permanent neck whip and has a permanent bitter end whip to prevent unraveling of the line.  The term heat sealed translates to: (just too darn lazy & cheap to do the job properly !)  The splices are done by a former US Coast Guardsman. 
   Custom lengths provided upon request ! Shipping is Priority mail for $9.00 in the USA !