Steel leaders

A wire leader is needed when targeting predatory freshwater or saltwater fish with sharp teeth. As such species will have no problem biting through conventional fishing line, using a wire leader will effectively ensure that you won’t lose your hook, lure, or fish.

For walleye per se, you do not need to use a steel leader at all, as they won’t be able to bite through your mainline. However, if the water you are fishing in contains pike or muskies, you can use a 10-15lb fluorocarbon leader instead of steel, in order to prevent bite-offs.