Description Overview Hpm 2.5" torquemaster iii extrusion pelletizing line Gear Box Lufkin gear box, size d55-411c Rating for input speed 1750 Ratio 17.1:1 Output rpm 99 SpecificationsSerial number: TM25III-38-78333Additional equipment: Many compounding screws includedGearbox serial number: 398-AGMA