This round corner bead is made by CGC to form smooth rounded exterior angles on wall corners. Its 3/4 in radius fits on 1/2 in or 5/8 in thick drywall panel. It offers an optimal resistance to edge cracking and chipping and will last even when your wall painting and home décor changes. The paper tape covering has a unique coating resistant to scuffing and fuzzing produced by sanding. This product has an 8 ft length perfect for regular walls height.