Check the listing for details. 25 Meter Spools OPST Super Strong Clear Smooth Fluorocarbon Tippet Leader. Condition: New. Listed at 20.28 USD. After struggling with soggy tippet spool labels for years, OPST realized that there was a gaping hole in the tippet spool market: waterproof labels. They set out to right this sad state of affairs. Not only are OPST's fluorocarbon spool labels waterproof, but the tippet itself is strong. How strong? Not super strong, Mega strong. What does that mean? You'll just have to try it and find out. The fluorocarbon comes in 8, 10, 12, 16, 18 and 20 pound test and come with convenient elastic bands to keep the tippet in check. 25 meters per spool. The diameters are: 8 pounds: 0.235mm, 10 pounds: 0.260mm, 12 pounds: 0.285mm, 16 pounds: 0.330mm, 18 pounds: 0.370mm, 20 pounds: 0.405mm Just select the pound test you require from the drop down menu and we will dispatch first class recorded in the UK, international options listed.