Meet the Alumi-Tread RV Step: a hybrid step featuring strong, steel linkage and anti-slip rubber grooves to provide you with better traction. The Alumi-Tread Step is available in triple or quad configurations. It has lightweight, rust-resistant aluminum treads. The below video provides more information on this product:
The Lippert Alumi-Tread Hybrid RV Step will be available as an aftermarket kit through aftermarket channels.