AMT Composites stock a wide range of high quality carbon fibre fabrics. Fabrics are available in a number of different weave patterns (such as plain weave, twill weave, satin weave etc.), weights (such as 200 grams per square meter (GSM), 300GSM etc.) and finishes, such as loom state or epoxy powder coated. Carbon fiber is a material consisting of fibers about 5–10 micron in diameter and composed mostly of carbon atoms. The carbon atoms are bonded together in crystals that are more or less aligned parallel to the long axis of the fiber. The crystal alignment gives the fiber high strength-to-volume. Several thousand carbon fibers are twisted together to form a yarn, which may be used by itself or woven into a fabric. A 1K yarn has one thousand carbon fibers making up the tow. Typically 1K, 3K and 12K tows are used for premium aerospace applications, while heavier 24K and 50K tows are used for industrial and sporting applications.