Originally, this hook was not made for fly-fishing but for Texas Rigs. However, it works really well for fly-fishing in waters with a lot of weed or if you want to fish close to the bottom without getting too many unintended hook ups.
# 1/0 Hook-length: 45.00 mm, Hook-gap: 16.50 mm, Wire diameter: 1.10 mm, Finish: Black-Nickel
# 3/0 Hook-length: 52.00 mm, Hook-gap: 19.40 mm, Wire diameter: 1.25 mm, Finish: Black-Nickel
# 5/0 Hook-length: 61.00 mm, Hook-gap: 22.50 mm, Wire diameter: 1.50 mm, Finish: Black-Nickel