EMPTY
Putting the cart before the horse, I will start with the conclusion of this whole set of pages referring to hook descriptions and make this statement:

I believe that a sensible and meaningful description of a hook for fly tying would contain the following elements:
 
  • Manufacturer's name/code for the model

  • The type of hook (i.e. 'sproat', 'round bend' OR special e.g. 'Klinkhamer')

  • Size, according to gape as defined in these pages

  • Length, according to shank/gape ratio as defined in these pages

  • Weight, as wire gauge relative to hook size, as defined in these pages.





There is no system common to different manufacturers with regard to hook sizes and descriptions. We, the users, can not select hooks by comparison with any confidence.

I have made measurements of the real dimensions of all the hooks that I have been able to obtain.
I have found that the gape of the hook is the only measurement which is near constant to the stated size, though there are many  which are well outside the average range.
The length of hooks is very badly described. There are some hooks described as 'dry ' which are of heavier wire than some 'wet', size being equal.
I have used my own measurements to derive the following table, which can be used to make real comparisons between hooks.


The first four columns are the manufacturer's specifications.

'GAPE' is my measurement in mm.

The last three columns show the REAL situation.
  • 'Shank:gape' is the length of the shank compared with the gape. The number is the actual ratio.

  • 'Size by gape' is the size strictly according to the gape. In many cases it agrees with the stated size but in many others it does not. (Odd sizes are included where a hook is precisely on the borderline)

  • 'Weight by wire' is the weight of the hook according to the measured wire gauge.
So You can use these last three columns to define a hook - real size according to gape: wet or dry according to weight: length according to Shank/gape
A complete explanation of my measurement and hook classification will be posted on the sub-page 'Hook measurements'

type brand code Description Stated size GAPE
shank: gape Size By Gape
Weight By Wire











emerger/special Partridge GRS15ST Klinkhamer long curved shank 10 8
MEDIUM 1.7 7
light












Drennan Dog nobbler Straight 6 8
V.LONG 2.7 7
heavy
long Drennan Carbon lure DE 6 8
V.LONG 2.9 7
heavy

Partridge Yorkshire Stronghold DE 8 6.5
LONG 2.3 7
Medium/light











wet/dry Kamasan B170 DE sproat 6 8
MEDIUM 1.7 7
medium











emerger/special Partridge GRS15ST Klinkhamer long curved shank 12 7
LONG 1.9 8
light












Drennan Dog nobbler Straight 8 7
V.LONG 2.6 8
heavy
long Sprite Dreadnought DE 8 7
V.LONG 2.7 8
heavy
long Drennan Carbon lure DE 8 7.5
V.LONG 2.8 8
heavy
long Partridge YH1A DE Captain Hamilton nymph 8 7.5
LONG 2.1 8
medium
wet Drennan Dropgate Nymph Straight. gold/red/silver 10 7
LONG 2.1 8
heavy

Gaelic Supreme
UE 8 7.5
LONG 2.1 8
heavy
long Sprite long DE 8 7
LONG 2.4 8
heavy











wet/dry Kamasan B170 DE sproat 8 7
MEDIUM 1.6 8
medium
wet Drennan Traditional wet DE 8 7
SHORT 1.2 8
heavy
emerger Hayabusa 371 UE 10 7
SHORT 1.1 8
medium

Partridge CS7 DE 10 7.5
SHORT 1.1 8
medium











long Partridge YH1A DE Captain Hamilton nymph 10 6.5
LONG 2.2 10
medium
emerger/special Partridge GRS15ST Klinkhamer long curved shank 14 6.5
LONG 1.9 10
light
emerger/special Partridge GRS15ST Klinkhamer long curved shank 16 6.5
MEDIUM 1.8 10
light
long Partridge YH1A DE Captain Hamilton nymph 12 6
MEDIUM 1.8 10
light











long Sprite long DE 10 6
LONG 2.3 10
v.heavy
long Kamasan B800 DE 10 6.5
LONG 2.4 10
heavy
long Drennan Carbon lure DE 10 6.5
LONG 2.4 10
heavy

Partridge SHI DE 10 6.5
LONG 2.1 10
heavy
long Hayabusa 552 DE 10 6.5
LONG 2.3 10
medium
dry Partridge LS mayfly UE 10 6
LONG 2.3 10
light
long Kamasan B830 DE round bend lure 10 6.5
LONG 1.9 10
medium

Partridge E6A DE 12 6
LONG 2.1 10
light











wet Drennan Dropgate Nymph Straight. gold/red/silver 12 6.5
MEDIUM 1.8 10
heavy
wet Hayabusa DE wet DE 10 6.5
MEDIUM 1.3 10
heavy
wet Kamasan B175 DE sproat heavy 10 6.5
MEDIUM 1.4 10
heavy

Partridge SHI DE 12 6
MEDIUM 1.4 10
heavy
emerger Hayabusa 371 UE 12 6
MEDIUM 1.3 10
medium
wet Kamasan B405 DE round bend subsurface 10 6.25
MEDIUM 1.4 10
medium
wet Kamasan B160 DE sproat 10 6.5
MEDIUM 1.4 10

wet/dry Kamasan B170 DE sproat 10 6
MEDIUM 1.5 10
medium
dry Partridge Ritz DE, offset point 10 6
MEDIUM 1.7 10
light

Partridge CS7 DE 14 6
MEDIUM 1.8 10
light
dry Partridge EIA Hooper DE fine dry fly 10 6
MEDIUM 1.8 10
light












Partridge CS7 DE 12 6.5
SHORT 1.1 10
heavy
wet Drennan Traditional wet DE 10 6
SHORT 1.2 10
heavy
dry Hayabusa 372 DE 10 6
SHORT 1 10
medium
wet Hayabusa sproat, short shank DE 10 6
SHORT 1 10
medium

Ashima F45
10 6
SHORT 1.1 10
medium
dry L Aiken Dry fly UE 12 6
SHORT 1.2 10
light











dry/nymph Niche N502 long curve 12 5.5
LONG 1.9 12
heavy
dry/nymph TMC 200R long curve 14 5
LONG 2.1 12
light












Partridge Yorkshire Stronghold DE 10 5.5
LONG 2.2 11
heavy












Partridge SH3 DE 14 5.5
LONG 1.9 12
heavy

Gaelic Supreme
UE 12 5.5
LONG 2.0 12

long Kamasan B830 DE round bend lure 12 6
MEDIUM 1.7 11
medium
wet Drennan Dropgate Nymph Straight. gold/red/silver 14 5.5
MEDIUM 1.8 12
heavy
wet Hayabusa DE wet DE 12 5
MEDIUM 1.5 12
heavy
wet Drennan Traditional wet DE 12 5.5
MEDIUM 1.2 12
heavy
wet Fulling Mill 31530 DE sproat heavy 12 5.5
MEDIUM 1.2 12
heavy
wet Kamasan B175 DE sproat heavy 12 5.5
MEDIUM 1.3 12
heavy











dry Kamasan B401 DE round bend 12 5
MEDIUM 1.8 12
medium
wet Kamasan B405 DE round bend subsurface 12 5.25
MEDIUM 1.3 12
medium
dry Kamasan B405 DE round bend subsurface 12 5.5
MEDIUM 1.3 12
medium
wet Kamasan B405 DE round bend subsurface 12 5.5
MEDIUM 1.3 12
medium
dry Fulling Mill 'Scorpion' 31310 DE dry round bend short 12 5.5
MEDIUM 1.4 12
medium











dry Partridge EIA Hooper DE fine dry fly 12 5.5
MEDIUM 1.6 12
light
wet Hayabusa sproat, short shank DE 12 5.5
SHORT 1 12
light











long Partridge YH1A DE Captain Hamilton nymph 14 5
LONG 2 13
medium
emerger/special Partridge GRS15ST Klinkhamer long curved shank 18 5
LONG 2.4 13
light











long Hayabusa 552 DE 12 5
LONG 2 13
light











long Partridge SH3 Grey Shadow Stronghold DE 16 5
MEDIUM 1.8 13
heavy
emerger Hayabusa 371 UE 14 5
MEDIUM 1.3 13
heavy
dry Partridge Ritz DE, offset point 14 5
MEDIUM 1.7 13
medium
wet/dry Kamasan B170 DE sproat 12 5
MEDIUM 1.5 13
medium











wet Kamasan B400 DE round bend surface emerger 14 5
MEDIUM 1.5 13
v.light











wet Drennan Traditional wet DE 14 5
SHORT 1 13
heavy
wet Hayabusa heavy wet DE 14 5
SHORT 1.1 13
heavy











long Partridge YH1A DE Captain Hamilton nymph 16 4.5
LONG 2 14
light












Partridge Yorkshire Stronghold DE 12 4.5
LONG 2.2 14
v.heavy
long Kamasan B830 DE round bend lure 14 4.5
LONG 1.9 14
medium/heavy











wet Hayabusa DE wet DE 14 4.5
MEDIUM 1.6 14
heavy
wet Kamasan B175 DE sproat heavy 14 4.5
MEDIUM 1.5 14
heavy
wet Fulling Mill 31530 DE sproat heavy 14 4.5
MEDIUM 1.3 14
heavy
dry Kamasan B401 DE round bend 14 4.5
MEDIUM 1.8 14
medium
dry/wet Fulling Mill 31550 DE sproat all purpose medium 14 4.25
MEDIUM 1.5 14
medium

Partridge Yorkshire Stronghold DE 14 4.5
MEDIUM 1.5 14
medium
dry Partridge EIA Hooper DE fine dry fly 14 4.5
MEDIUM 1.7 14
light

Ashima F45
12 4.5
MEDIUM 1.3 14
light
dry Fulling Mill 'Scorpion' 31310 DE dry round bend short 14 4.5
MEDIUM 1.4 14
light
dry Drennan dry UE 14 4.5
MEDIUM 1.4 14
light






















wet Kamasan B160 DE sproat 14 4.5
SHORT 0. 9 14
medium
dry Partridge Captain Hamilton dry UE 14 4.5
SHORT 1.1 14
medium
wet Hayabusa sproat, short shank DE 14 4.5
V.SHORT 0.9 14
light











dry/nymph TMC 200R long curve 16 4
LONG 2 15
medium












Gaelic Supreme
UE 16 4
V.LONG 2.5 15

long Kamasan B200 DE deep water nymph 14 4
V.LONG 2.5 15
v.heavy
long Kamasan B830 DE round bend lure 16 4
LONG 1.9 15
heavy
long Hayabusa 552 DE 14 4
LONG 2.4 15
light











dry Partridge Captain Hamilton dry UE 16 4
MEDIUM 1.5 15
medium











dry Partridge EIA Hooper DE fine dry fly 16 4
MEDIUM 1.6 15
light

Partridge Yorkshire Stronghold DE 16 4
MEDIUM 1.6 15
light

Ashima F45
14 4
MEDIUM 1.3 15
light

Ashima F35 DE 16 4
MEDIUM 1.4 15
light
wet Mustad wet DE 16 4
MEDIUM 1.4 15
light
dry Partridge Captain Hamilton dry UE 16 4
MEDIUM 1.6 15
v. light
dry Partridge L3B UE 16 4
MEDIUM 1.6 15
v.light












Partridge Yorkshire Stronghold DE 18 3.5
LONG 1.9 16
light
dry/nymph TMC 200R long curve 18 3.5
LONG 2 16
light











wet Fulling Mill 31530 DE sproat heavy 16 3.75
MEDIUM 1.2 16
heavy
wet Kamasan B175 DE sproat heavy 16 3.5
MEDIUM 1.4 16
heavy






















dry Kamasan B405 DE round bend subsurface 16 3.5
MEDIUM 1.5 16
medium
dry Kamasan B401 DE round bend 16 3.5
MEDIUM 1.9 16
medium
dry Partridge EIA Hooper DE fine dry fly 18 3.5
MEDIUM 1.7 16
light
dry Fulling Mill 'Scorpion' 31310 DE dry round bend short 16 3.7
MEDIUM 1.4 16
light
wet Kamasan B400 DE round bend surface emerger 16 3.75
MEDIUM 1.6 16
light
dry Drennan dry UE 16 3.5
MEDIUM 1.6 16
light
dry Partridge Captain Hamilton L4B dry UE 18 3.5
MEDIUM 1.4 16
v. light
dry Partridge Captain Hamilton L3B dry UE 18 3.5
MEDIUM 1.7 16
v. light











wet Kamasan B160 DE sproat 16 3.5
SHORT 1 16
medium











long Kamasan B200 DE deep water nymph 16 3
V.LONG 2.8 18
outsize











wet Hayabusa DE wet DE 16 3
MEDIUM 1.7 18
v.heavy











dry Kamasan B401 DE round bend 18 3
MEDIUM 1.8 18
medium
dry Fulling Mill 'Scorpion' 31310 DE dry round bend short 18 3
MEDIUM 1.4 18
light
dry Kamasan B410 Smuts midge 16 3
MEDIUM 1.7 18
light











wet Kamasan B405 DE round bend subsurface 18 2.75
2 19
medium











dry Kamasan B401 DE round bend 20 2.5
MEDIUM 1.8 20
medium
dry Kamasan B405 DE round bend subsurface 20 2.5
MEDIUM 1.6 20
medium
dry Kamasan B410 Smuts midge 20 2.5
MEDIUM 1.4 20
light











dry Varivas 2300 Ultra Midge straight, light 26 2.5
V.SHORT 0.8 20
light











dry Kamasan B410 Smuts midge 22 2.25
MEDIUM 1.2 22
light