HOLD DOWN FOR BATTERY BOXES 8N10732 and C0NN10732T. FOR MODELS USING 6-VOLT BATTERY. TRACTORS: 9N, 2N, 8N, NAA, 501, 600, 601, 700, 701, 800, 801, 900, 901, 2000-4000 SERIES (1953-1964) WIDTH 9-1/4", LENGTH 7-1/4", CENTER-TO-CENTER MOUNTING HOLES 10-1/8".