GHS Lap-E Nickel Plated Steel Electric Hawaiian Lap Steel E Tuning Strings ROUNDWOUND  Roundwound strings produce hearty, vibrant tone. DYNAMITE ALLOY  GHSs proprietary dynamite alloy nickel-plated steel retains punch and clarity between string changes. CORROSION-FREE  These strings are sealed in corrosion-free NitroPack packaging, so you can count on a fresh set of strings every time. GAUGES: This set is designed for Open E tuning. Gauges: 013 017 024 032W 042W 056W.