vattceel screw stem Compatible with Coleman, Dometic, Advent air distribution box screw stem(4 pack) for easy installation High-Strength Material：Made from alloy steel, these threaded rod are stronger than standard steel threaded rod, ensuring a secure connection even under vibration and heavy loads. Corrosion-Resistant Treatment：Passes standard salt spray testing, providing reliable rust resistance. Package Includes： 4 threaded rod and 10 screws vattceel screw stem Compatible with Coleman, Dometic, Advent air distribution box screw stem(4 pack) for easy installation