The Max TW1061T-EG Electro-Galvanized Wire is designed for use with the MAX RB441T TwinTier Rebar Tier. This twin-spooled, 19-gauge rebar tie wire is made of carbon steel and coated with a layer of 5-micron zinc to provide added moisture resistance. It's useful for projects in challenging environments and coastal or marine areas. Use it in road and bridge construction, swimming pools, retaining walls and foundation pouring.