The Claas 0009591012 is a genuine OEM chain tension roller designed for various Claas combine harvesters and forage harvesters. Made from durable black plastic, this tension roller features an outer diameter of 100 mm, an inner diameter of 30 mm, and a width of 30 mm. It has 19 teeth and is suitable for 12 B-1 chain type with a 19.05 mm pitch, weighing 0.8 kg. This component ensures proper chain tension for efficient and reliable machine operation.