Arch-Flex 333 is the first arch product that comes on a roll. Designed for all radius curves, Arch-Flex also resists dents and paint chipping, cuts easily with a utility knife or scissors, is applied with all-purpose joint compound, and will not rust. The tape is manufactured with patented tear strips to create easy straight-to-curve transitions. To apply, measure entire curved application by using Arch-Flex 333 as a tape measure. Cut to measured length plus 1 in. Fold Arch-Flex 333 completely in half at crease and remove tear strip by folding along perforations and pulling. Leave tear strip intact where a straight-to-curve transition is required. Apply all-purpose compound to corner. Starting from one end, press Arch-Flex 333 firmly into compound. Recut length to fit if needed. Wipe down compound and adjust to a smooth curve. Apply second coat immediately and let dry. Apply final coat, let dry, and sand.