Clinch-On “J” bullnose cornerbead trim with a 3/4″ radius was designed to cap drywall for a professionally finished drywall edge at window and door jambs and is an alternative to the kerf bullnose cornerbead trim. For maximum protection Clinch-On manufactures its “J” bullnose trim with proprietary coated steel. Our 5/8″ flange provides you with liberal installation space for nailing, stapling or screwing our cornerbead to drywall.