Ahrex Snaps: Fly fishermen will appreciate the ease and speed of use of Ahrex Snaps for changing flies, specially designed for larger sizes. These snaps are available in two sizes, M and L, and are recommended for flies of size 1/0 and larger. With a length of 9.10 mm, a thread diameter of 0.72 mm for size M, and a length of 10.15 mm with a thread diameter of 0.80 mm for size L, they are perfectly sized to ensure the necessary sturdiness without compromising fly action. The nickel-black finish adds a touch of elegance and offers enhanced resistance to corrosion. Using Ahrex Snaps means spending less time handling your equipment and more time fishing.