Stainless Steel Replacement Tips for Avanti Fiberglass Elements PDL 2, Moonraker 4 & 6 Stainless Steel Replacement tips for fiberglass elements on Avanti and Antenna Specialist PDL 2, Moonraker 4 & 6 antennas. Made from T304 Seamless Stainless Tubing. Price is per set of 4 tips.