The OEM John Deere TCA17524 Flat Idler Pulley is a high-quality replacement part designed specifically for John Deere lawn mowers. Made in the United States, this black pulley comes as a single unit and is compatible with various models such as Z 510, 520, 810, 820, 830, 910, 920, 930, and 950. With the John Deere brand reputation for durability and reliability, this flat idler pulley ensures smooth and efficient performance of your lawn mower, helping to keep your yard looking neat and well-groomed.