The Optibelt HXE10556AB Power Band Belt is a high-quality, durable drive belt designed for optimal performance in John Deere agricultural machinery. This genuine OEM equivalent belt ensures reliable power transmission and extended service life. It is specifically engineered to fit various John Deere S-Series and STS Combines, including models S660, S670, S680, S690, S760, S770, S780, S790, S550, S650, 9670STS, 9770STS, and 9870STS. With precise dimensions of 4419.6 mm length, 50.8 mm width, and 25.4 mm height, and a weight of 4.54 kg, this belt meets stringent specifications for demanding agricultural applications.