Scientific Anglers Nylon Interlocking Tippet Spool with Cutter Material: nylon Overall Length: 98 ft Size: 0 X 1 X, 2 X 3 X, 4 X 5 X, 6 X 7 X, 8 X 20 lb Test: [0X] 14.9 lb, [1X] 12.7 lb, [2X] 9.8 lb, [3X] 8.5 lb, [4X] 6.0 lb, [5X] 4.9 lb, [6X] 3.3 lb, [7X] 2.3 lb, [8X] 1.4 lb Diameter: [0X] 0.011 in, [1X] 0.010 in, [2X] 0.009 in, [3X] 0.008 in, [4X] 0.007 in, [5X] 0.006 in, [6X] 0.005 in, [7X] 0.004 in, [8X] 0.003 in, [20 lb] 0.013 in