This part is commonly Used on models:
72514 GrandStand HDX Mower, With 60in TURBO FORCE Cutting Unit
72517 GrandStand HDX Mower, With 72in TURBO FORCE Cutting Unit
72525 GrandStand Multi Force Mower, With 60in TURBO FORCE Cutting Unit
72531 GrandStand Multi Force Mower, With 52in TURBO FORCE Cutting Unit