The Zareba 250 ft 17 Gauge Aluminum Wire is an ideal, all-purpose wire for your electric fence. Rust-proof and lightweight, this wire will last the lifetime of the fence and can be used with plastic or ceramic insulators. A breaking load of 90 lb and tensile strength of 38,000 psi is suitable for containing larger animals such as cattle and horses. The lightweight and pliable nature of this 17-gauge wire makes handling and splicing the wire easy. The built-in spool spins freely when in your hands, making installation quick and simple!