10 inch Woven disc with spring loaded center. Disc has 1-3/8 inch-10 spline hub. NAA, 600, 700, 800, 900, (1953 to 1957)

10 inch Woven disc with spring loaded center. Disc has 1 inch-15 spline hub. 600, 700, 800, 900, (5 speed 1955 to 1957); 601, 701, 801, 901, 2000, 4000, (1958 to 1964)

11inch Button disc. Disc has 1 inch-10 spline hub. For single & double clutch tractors. 2000, 3000, 4000, (1969 to 1971