The 5/8 Inch To 1/2 Reduced Bushings are sold in packs of 3 and are reusable, making them a practical and cost-effective solution for reducing arbor holes on Zephyr wheels from 5/8 to 1/2. These bushings are designed for use with variable speed machines only, providing a versatile and convenient option for adapting your equipment to different arbor sizes. With their durable construction and easy-to-use design, these reduced bushings offer a reliable and efficient solution for your machining needs.