NCA2250 Years:1955-64 Brake Repair Kit, less shoes. Tractors: 501, 600, 700, 800, 900, 2000, 4000 (1955-1964). Contains: 1-8N2048 socket,4-6H2066 bearing cup,2-NCA2204A spring,1-NCA2217A seal,1-NCA2296B spring,2-NCA2333A pin,2-NCA22219A spring,2-NCA22275A spring,2-NCA22276A pin,2-NCA22218A collar,2-NCA22286A retainer,1-H2041SCRW screw,1-8N2223 nut.