Glass threads are typically thin, flexible fibers made of glass. These fine threads are used in various applications like electrical insulation, textiles, and optical fibers. The term "glass threads" can also be referred to as "fiberglass," "glass fibers," "glass wool," or "glass filament." These synonyms can be used interchangeably in different contexts related to the use of these materials. Glass threads or fibers come in different shapes and sizes, including rovings, chopped strand, and continuous strand. These materials are known for their excellent resistance to heat, chemicals, and corrosion, making them useful in various industrial and engineering uses.