Rectangualr Plastic Plugs

2-3/4” Square Tubing OD 2.75" - 70 x 70 MM 6 to 9 Ga Rare Size for Thick Walls 3.6 to 5 MM  fit Inside Dimensions ID from2.5/16” to 2.3/8”. Heavy Duty Rare Size Square Plugs 2-3/4” Square Tubing OD 2.75 Inch (70 x 70 MM 6 to...