The Claas 0007721691 Tension Roller is a genuine OEM component designed for various Claas Lexion and Tucano combine harvester models. This essential roller maintains proper belt tension, contributing to the efficient and reliable operation of the machinery's drive systems. With an outer diameter of 100 mm, an inner diameter of 25 mm, and a width of 30 mm, this durable roller weighs approximately 0.6 kg. It is a direct replacement for part numbers 0007721690, 7721690, and 7721691, ensuring precise fitment and performance in demanding agricultural applications.