This product is a roll of synthetic fiber cutting cord, which is used for various purposes such as glass cutting, wire stripping, and cable cutting. It is made of high-quality materials and has a tensile strength of 720 lb, which makes it one of the strongest cords available on the market. The diameter of 1.25mm ensures that it can easily cut through various materials, including glass, metal, and plastic. The cord is also resistant to heat and chemicals, making it a durable and long-lasting product. It is easy to use and can be cut to the desired length using a standard wire cutter. Overall, this synthetic fiber cutting cord is an essential tool for anyone who requires a strong and durable cord for cutting purposes.