Prescott Plastics 2 Pack: 3 Inch Square Plastic Plug, Heavy Duty Tubing Post End Cap
Prescott Plastics heavy duty high grade thick wall black plastic finishing plugs, end cap for 3" outside diameter steel square tubing. These fit inside tube diameters from 2.65" to 2.82" (2-11/16" to 2-13/16"). Heavy duty plastic plugs for square tubing are manufactured to provide a secure fit on multiple tube gauges.