The Beckett 51484U Electrode Kit is specifically designed for Beckett AFII oil burners with up to 9" blast tubes. Made in the United States by the reputable brand Beckett, this kit includes everything needed for efficient and effective maintenance of your oil burner. With a California Prop 65 Warning, this product ensures compliance with safety standards while providing reliable performance for your HVAC system. Trust in this quality kit to keep your heating systems running smoothly.