3"-wide, 6.2oz fiberglass cloth tape with a silane finish. The sides of the tape are woven to prevent unraveling. Sold in 3 ft. sections.
Eddyline recommends this fiberglass cloth tape for use with methyl methacrylate adhesive (e.g. Devcon Plastic Welder) for repairing cracks in Carbonlite 2000.