This part is commonly Used on models:
72514 GrandStand HDX Mower, With 60in TURBO FORCE Cutting Unit
72506 GrandStand HDX Mower, With 52in TURBO FORCE Cutting Unit
72510 GrandStand HDX Mower, With 60in TURBO FORCE Cutting Unit
72517 GrandStand HDX Mower, With 72in TURBO FORCE Cutting Unit