This 115-9649-03 is a high-flow replacement blade matching Toro OEM specifications, integrally forged from high-strength carbon steel with heat treatment and anti-rust coating for excellent wear and impact resistance. The notched ends enhance airflow for improved clipping collection and side discharge. The round mounting hole fits Toro zero-turn mowers with 60-inch decks, ensuring secure installation. It is an ideal accessory to restore cutting performance and improve lawn trimming efficiency.