THIS FITS THE FOLLOWING B.F. AVERY :A, R THIS FITS THE FOLLOWING Fits Case :310 CRAWLER, 310C CRAWLER, 310D CRAWLER, 310E CRAWLER, 310F CRAWLER, 420C CRAWLER, INDUSTRIAL 320, INDUSTRIAL 420, INDUSTRIAL 420B THIS FITS THE FOLLOWING COCKSHUTT :20, CO-OP E2 THIS FITS THE FOLLOWING IH :1026, 1066, 1086, 1206, 1256, 1456, 1466, 1468, 1486, 3088 (DUAL SPEED PTO ONLY), 3288 (DUAL SPEED PTO ONLY), 3388 (DUAL SPEED PTO ONLY), 3488 (DUAL SPEED PTO ONLY)