Camco RV gray wraparound step rug adjusts to fit steps with a tread of 8 to 10-1/2 in. Just wraparound your existing RV step and hook springs into the holes that fit your step. No screws, glue or tools needed. Springs are unique in that the hook ends are turned back making installation easier. Helps to keep your RV clean by cutting down on tracked-in dirt. For manual or electric RV steps.