This is a Cub Cadet Brake lining retainer IH-384720-R2. It fits:

1000 2050540U 2050550U
102
104
105
1200, 2050056U, 2050570U, 2050580U
1210, 1282, 680 1210 756,299 & Prior 1282 142-680-100 142-680-399 143-680-100 143-680-399 144-680-100 144-680-399 145-680-100 145-680-399 146-680-100 2050587U 2050603U 680
122
123
124
125
1604, 1606, 580, 582, 2050598U, 582, 1604, 144-582-399, 145-582-399, 142-582-399, 142-582-100, 143-582-100, 144-582-100, 205-0582, 1606, 145-580-100, 144-580-100, 143-582-399, 580, 143-580-100, 142-580-100, 146-580-100, 2050599U, 2050596U, 2050582U, 2050583U, 145-582-100, 146-582-100
1710, 682 142-682-100 142-682-399 143-682-100 143-682-399 144-682-100 144-682-399 145-682-100 145-682-399 1710 205-0600 2050584U 2050592U 2050593U 2050600U 682
1711, 1712, 782, 784 142-782-100 142-784-100 142-784-399 143-782-100 143-784-100 143-784-399 144-782-100 144-784-100 145-782-100 145-784-100 1711 1712 2050585U 2050594U 2050601U 782 784 784142 784143
70 & 100, 100, 70
71
72
73, 2050036U
800, 2050050U, 2050510U, 2050520U