Lower Idler sprocket, 8 tooth, 5/8" bore, sealed bearing. John Deere, fits all 40 series to s/n 466450.Case-IH, fits all 800, 900, 1000, 2200, 2400, 3200, 3400 seriesNew Holland, fits 962 with CA555 chain (1997 and later); all 974, 996, 96C and 98C. Pack of 1