SA Amplitude Smooth Trout Expert If you've ever blamed your fly line for spooking a fish, this is your redemption arc. The Scientific Anglers Amplitude Smooth Trout Expert is built for anglers who take delicate presentations seriously — true-to-grain-weight, buttery smooth, and engineered to land a size 22 Trico like it was never there. AST Plus slickness additive — up to 5x less drag, 8x the durability of traditional lines Elongated front taper for delicate, precise presentations True-to-grain-weight — what it says on the box is what you get Excels at medium-to-long distances with dry flies and smaller nymphs A dream on glass and bamboo rods Braided multifilament core for consistent performance in moderate and cold climates Available in WF-2-F through WF-7-F in Leather/Sage Green/Buckskin For the angler who knows the difference between a good cast and the right one. TAPER DIAGRAM UMBER LINE WEIGHT HEAD LENGTH TOTAL LENGTH HEAD WEIGHT GRAIN WEIGHT* 147354 WF-2-F 65.0’ / 19,8m 90.0’ / 27,5m 170gr/11,1g 80gr / 5,2g 147361 WF-3-F 65.0’ / 19,8m 90.0’ / 27,5m 195gr/12,6g 100gr / 6,5g 147378 WF-4-F 67.0’ / 20,4m 90.0’ / 27,5m 240gr/15,6g 120gr / 7,8g 147385 WF-5-F 69.0’ / 21,0m 90.0’ / 27,5m 300gr/19,4g 140gr / 9,1g 147392 WF-6-F 71.0’ / 21,6m 90.0’ / 27,5m 340gr/22,2g 160gr / 10,4g 147408 WF-7-F 73.0’ / 22,3m 90.0’ / 27,5m 405gr/26,2g 185gr / 11,9g * Grain weight for the first 30′