Strait-Flex Big is Wider tape for use on hard to straighten surfaces, vaulted ceilings where framing members are not straight or hanging is not fitted correctly. Also used on outside obtuse drywall corners in place of metal corner bead, and outside 90 degree corners without backing. Made with same high-tech material as original Strait-Flex. Strait Flex produces straight, durable, drywall corners inside and outside. Strait-Flex Big is a drywall joint tape solution for framing irregularities, corner denting, chipping, and drywall cracking. Installs with standard drywall taping compounds, and does not require nails, screws or other fasteners. Second coat of drywall finishing compound can be applied immediately, and only requires a very light skim coat.