Camco's Cylinder Stabilizing Base for propane tanks helps prevent accidental tipping of your propane cylinder, especially during transport. It is for use with 20 pound or 30 pound propane tanks. The impact resistant base attaches easily to the tank to keep the cylinder in place during storage or travel. Push tank firmly into the Stabilizing Base for a tight secure snug fit. Helps prevent accidental tipping of propane cylinder when cylinder is fully inserted into the base.