Trim-Tex 1/2 in. L-Shaped Tear Away Bead, 8 ft. A rust-proof dent resistant PVC vinyl bead used to finish exposed edges of drywall. Benefits: Features a 5/8 inch tear off strip that acts as a guide for the taping knife as well as a protective mask for mudding. Does not contain cellulose, a food source for mold. Achieves Class A rating for flame spread as per ASTM E84 standards. Self-extinguishing when source of flame is removed. Can be used with Trim-Tex 847 Spray Adhesive. Trim-Tex Vinyl Corner Bead products are designed for interior use. Data Sheet