Explorer is a high-quality fluorocarbon by Tsurinoya, with a thin diameter and high strength its true to its breaking strain. Supplied in a 35m spool! We have done multiple tests on this line including knot strength, diameter, and feel. Available in 5 braking strains: 3.2lbs 0.160mm 4lbs 0.170mm 4.75lbs 0.200mm 6lbs 0.205mm 8lbs 0.250mm