Drywall Corner Bead provides superior corrosion protection and mud adhesion. This product features a hot-dipped galvanized surface coating (Metal Corner Bead) or high purity PVC plastic (With Fiberglass Mesh) which provides the finest rust protection. Using the corner beads, do not need to use steel panel, also can enhance the construction efficiency two to five times, reduce the construction cost, and guarantee the beauty and firmness of corner.