Commercial Nylon Paraline Cord is a 32-carrier braid over a stranded or textured nylon core.
The #550 has a 7-strand nylon core while the 650 has a 4-strand textured nylon core.
Average break strength for the #550 is 550 pounds and 300 to 350 pounds for the 650.
Standard put-up is 1,000-feet per spool.
Some spools may have one break.