Camco RV Self-Stor Step Support mounts under RV entry steps for safety. Swings up and stores securely under RV step. Stabilizes steps and helps keep the coach from rocking. Helps prevent sag and wear. Heavy-gauge steel with a 3/4" solid metal screw thread. Self-Stor Steps can adjust from 8.5" to 14". Stabilizes RV steps and helps keep the coach from rocking Helps prevent sag and wear Heavy-gauge steel with a 3/4" solid metal screw thread has a 1000lb rating Self-Stor Steps can adjust from 8.5" to 14" Mounts under RV entry steps for safety, and swings up to store securely under RV step when not in use