What are the purpose of the cast and the helix that are manufactured into the wire?

The purpose of the cast and the helix that are manufactured into the wire is to provide strength, flexibility, and durability to the wire. The cast helps to maintain the shape and structure of the wire, while the helix adds additional strength and flexibility, allowing the wire to bend and twist without breaking. This makes the wire suitable for a variety of applications, such as electrical wiring, fencing, and construction.