Tubing End Plugs for round standard tubing are designed to fit multiple tube gauges and provide a secure fit. Polyethylene tube plugs are ideal for office and patio furniture, tubular racks, appliances, exercise equipment, or anywhere a finished look is needed. Tube plugs include multiple horizontal ribs designed with built-in flexibility for easy install and secure fit. THESE PLUGS ARE TO FIT INSIDE A 1 1/8" OD tubing in 14-20 Gauge. The actual Diameter of the part being inserted into the pipe/ Tube is smaller than 1.125" so it will fit inside.