Metal corner tape is a composite drywall product made from two galvanized steel strips bonded to a paper or fiber tape. The steel provides strength and dent resistance, while the paper surface ensures smooth adhesion and finish with joint compound.

Unlike rigid corner beads, metal corner tape is flexible and can be folded to fit both 90° angles and custom off-angle corners. It is commonly used during the taping phase of drywall installation to reinforce outside corners and prevent cracks or chipping over time.