Set of 3 Nerve-Draining Wires / Nerve-Excision Tools Suitable for small fish with slender bodies. For horse mackerel, mackerel, grunt, etc... Easier to store and less prone to bending than steel wire types. Fits easily in a tackle box. Made with the most flexible wire among 304 stainless steel wires, so it easily slides in without difficulty. Stainless Steel Hard Wire Material: SUS304 Stainless Steel 0.6mm x 300mm - 2 pieces 0.8mm x 500mm - 1 piece