Brand New MTD / Cub Cadet RZT 50. Kit Includes / Replaces OEM Part #'s. With 6 star center hole and grease zerk. Replaces OEM part #'s. Heavy Duty Blades (made in USA). If the item is found to be defective the customer may send the part back for inspection from Provenpart, if the part is considered to have a material defect Provenpart will send the customer at no charge a replacement part.