This is the Official AFTMA (American Fishing Tackle Manufacturers Association) fly line weight specifications. Using this chart will help you tell the actual weight of the fly line in grains. So you can be sure you're getting the fly line weight that is right for you.
Line Weight
Low
Target
High
1
54
60
66
2
74
80
86
3
94
100
106
4
114
120
126
5
134
140
146
6
152
160
168
7
177
185
193
8
202
210
218
9
230
240
250
10
270
280
290
11
318
330
342
12
368
380
392
13
435
450
465
14
485
500
515
15
535
550
565
Have more questions? Contact us or watch this video we made explaining the concept:
