Orvis guides love Mirage™ tippet for its turnover power, abrasion resistance, and invisibility. Perfect for nymphing and chucking large streamers or chasing wary fish in still water and spring creeks. Sizes 0x-7x. 6, 8, 12, 16, 20, 25, 30, 35, 40, 50, 60 lb. Mirage Fly-Fishing Tippet Material Size 4X Fluorocarbon Orvis