Made to FSP specs., 5/8 X 45.87". Fits 800 series 2 speed garden tractors 1997 and after. Kevlar® corded belts, also called Aramid or extra-heavy duty belts are constructed of organic polyaramide fibers that are manufactured using complex chemical processes. **Interesting fact: Kevlar® is the same material bulletproof vests are constructed with. Kevlar® is used in PIX belts as a tension member because of its inherent stability and high tensile strength Cord