Features: This 18 oz fiberglass cloth has features like high tensile strength, dimensional stability, high temperature resistance, rust resistance, insulation flame retardant, and chemical resistance. Composition and Size: This fiber glasses cloth is made from glass fibers woven into specific patterns. 0.5 mm thick plain weave, it measures about 50? wide, 3 ft/ 1 yd long, and weighs 18 oz/sq.yards. Resin Compatibility: This woven fiberglass cloth is compatible with Epoxy, polyester, and vinyl ester resin systems. This makes it an essential product in the fiberglass repair kit. Easy to Use: Fiberglass repair cloth is lightweight & flexible and can be cut to the size as per your custom requirement, making it easy to use with fiberglass resin for strong waterproof repair works. Versatile Use: Fiberglass cloth can be used to repair holes or cracks in many surfaces, including metal, plastic, ceramic, wood, etc., great for use in boats, auto, craft, surfboards, tubs, pools, etc.