Through-Wire Construction on Rigged Models: The TwinPike swimbait utilizes a through-wire construction, which offers the highest durability available. The internal stainless steel wire harness has a 1.5mm (.06inch) diameter, which makes it essentially indestructible. The biggest, meanest and most vicious fish will make it to the boat, no matter the conditions! The high-end Zion brand hooks ensure the highest possible quality. The black nickel finish helps the hooks retain their sharpness and improves durability. The hooks are attached with stainless steel split rings that have been pressed to enhance their strength.