AntennaMastsRus - 13" All-Terrain Flexible Rubber Antenna is Compatible with Ford F-350 Super Duty (1999-2018) - Spring Steel Internal CORE Fits: 1999-2019 Ford F-350 Super Duty 13" All-Terrain SHORT Custom Flexible Rubber AM/FM Antenna **UNIQUE SPRING-STEEL INTERNAL CORE** Order before 2PM CST, Same Day Shipping from Wisconsin!!! 100% Satisfaction Guarantee, Period!