The Yellow #4 Mill Treated 20 Ply Airway is a versatile and practical product used for primary cutting. Made with #4 Mill Treated 20 Ply Cloth, it is specifically designed for use on aluminum and stainless steel. With a 5/8 inch arbor hole, it fits most makes and models. This airway is compatible with suggested rouge bars such as Tripoli, Green Chrome, and 87 Stainless. Available in 8 and 10-inch wheel sizes, it offers convenience and efficiency. Each airway is sold separately, making it a reliable choice for various cutting applications.