2-1/16 in. x 100 ft. Perfect-90 Flexible Corner Trim (Case of 12)Perfect 90, a paper laminated composite tape from Strait Flex, is twice as fast and twice as strong as conventional paper or mesh tapes. No compound is needed over finished surface. Perfect 90 ensures a clean, sharp corner without the risk of damage from a taping knife, will not shrink and will not fuzz up during sanding. The tapes outer edge features a diamond punch pattern for a superior bond, faster drying, with no rippling or blistering.