ClarkDietrich P21 Inside Corner Bead 8 ft L 3/8 in W Metal Galvanized - Pack of 50

Platinum® tape-on inside 90 deg paper-faced corner bead provides very straight and precise inside corners. The rigid steel-reinforced inside corners provide a durable guide to achieve exceptionally straight and sharp inside corners. Paper-faced inside corners are embedded in joint compound and pressed firmly into place. Excess compound is removed with a drywall knife.