Plastic Baler Twine provides the optimal durability and strength. 4, 000' Bridon plastic baler twine has a 440# knot strength for 3' x 3'; 3' x 4', and 4' x 4' balers. This product is sold as a single spool with no box. Bridon Cordage is ISO Certified for consistent QUALITY that you can count on. | Bridon 4,000' 440# Knot Plastic Baler Twine for 3' x 3'; 3' x 4', and 4' x 4' Balers | Size 4000'