TroutHunter flourocarbon tippet is the standard by which others are measured.  Incredible strength and abrasion resistance are key strengths to this world-class tippet material.  The innovative spool design allows for spools to "click" together and the integrated tippet tender doesn't allow for spools to peel off line.  WROC highly recommends this product - we use it and believe in it!  50 meter spools.