Blood Run Tackle Fluorocarbon Leader Material is constructed from 100% pure premium fluorocarbon with the highest quality Japanese resin to create an ultra-smooth and durable material. The resin mixture also gives the material a slight amount of flex and stretch, yet allows it to maintain outstanding sensitivity. The fluorocarbon leader is perfectly invisible underwater and is impervious to harmful UV rays. Blood Run created this leader with enhanced abrasion resistance for trolling applications. Use a leader that you can be confident in with the Blood Run Tackle Fluorocarbon Leader Material! 100% pure premium fluorocarbon Ultra-smooth and durable 100% invisible underwater Impervious to UV rays Abrasion resistance for trolling Spool length: 50 yards Quantity per pack: 1 Test (lb.) Diameter (in.) Diameter (mm) 3 0.005 0.19 4 0.006 0.21 5 0.007 0.22 6 0.008 0.2 8 0.009 0.25 10 0.010 0.28 12 0.011 0.29 15 0.012 0.31