The 27 AT5 25-200ZA is a one-piece, pre-tensioned, ribbon-style timing belt manufactured by Optibelt. It's made of Polyurethane (PU) and reinforced with glass fiber, which gives it excellent performance characteristics. It has a 25-mm wide profile body, with an outside circumference of 200-mm and and has nylon 0.08-mm reinforced teeth for added power transmission. The 27 AT5 25-200ZA is a great choice for medium to heavy duty applications, such as industrial automation, thanks to its high levels of abrasion resistance and low-stretch characteristics.