Roy Ole Læhren Jakobsen
Shape
R = Round Bend
C = Curved
S = Sproat / O`Shaughnessy
L = Limerick
Wire Diameter
2x Fine = 50 - 20 = 30 (R30)
Std = 50 (R50)
1x Heavy = 50 + 10 = 60 (R60)
2x Heavy = 50 + 20 = 70 (R70)
3x Heavy = 50 + 30 = 80 (R80)
4x Heavy = 50 + 40 = 90 (R90)
Finish
Unless Specified, Hooks are Bronzed
BL = Black
BLN = Black Nickle
D = Duratin
SS = Stainless Steel
Z = Z-Steel
Hook Lenght
3x Short = 50 - 3 = 47 (C47S D)
2x Short = 70 - 2 = 68 (C68)
1x Short = 50 - 1 = 49 (C49S)
Std = 50 (R50)
1x Long = 70 + 1 = 71 (C71S SS)
2x Long = 80 + 2 = 82 (S82)
3x Long = 50 + 3 = 53 (C53)
Hook Eye
Unless Specified Hooks are down eye
S = Straight
U = Up Eye
Others
O = Offset
X = Barbless
Mustad Signature Series Fly Hooks
Chemically sharpened needle points, with micro barbs. These hooks compare in quality with any other fly hook on the marked. The Mustad Signature Series hooks offer fly tiers unparalleled sharpness and strenght as well as exact proportionally accurate and consistent hook gap, bend, wire diameter and shank length. The result is precise scaling of fly patterns across each hook size range for a level of uniformity no other premium fly hook can guarantee
Thinner
Diameter
Shorter
Hook
R50
Longer
Hook
Thicker
Diameter
R50 represents THE STANDARD:
Standard length and Standard wire diameter
This is the hook all other hooks relate to for compars on of shank lenght (Extra long / Extra short), and wire diameter (Extra Heavy / Extra Fine).
The letter "R" indicates that the hook has a rounded bend, and the letter "C" indicates that it has a curved shape. Simple as that!
Mustad Signature Hook Chart - how you can read the hook names
R30 NP-BR
1x fine - Std
R48 NP-BR
1x fine - 2x short
C49 SNP-BR
1x fine - 1x short
R43 NP-BR
1x fine - 3x long
R50 NP-BR
Standard Dry Fly
C52 SNP-BN
Std - 2x long
C53 SNP-BR
Std - 3x long
S60 NP-BR
1x heavy - Std
C67 SNP-BR
2x heavy - 3x short
CO68 NP-BR
2x heavy - 2x short
S70 NP-BR
2x heavy - Std
R73 NP-BR
2x heavy - 3x long
R74 NP-BR
2x heavy - 4x long
R75 NP-BR
2x heavy - 5x long
S80 NP-BR
3x heavy - Std
S82 NP-BR
3x heavy - 2x long
R90 NP-BR
4x heavy - Std