Genuine Agri-Fab lawn sweeper pinion gears. Set of 2 includes 1 part number 2692-6 (right side) & 1 part number 2692-7 (left side). 12 teeth. .625" ID, 1 7/16 ODIf you are unsure if the part numbers listed are correct for your application please contact us with your complete model and serial number for assistance before ordering.