Red Plastic Blocking Head Cone Plug Hole Blocking Plug Round Pipe Plug Thread Dust Cover Round Pipe Pipe Plug Blocking Male Hole Plug Head Inner Hole Cover Dull Head Cover Round Hole
Black Circular Plastic Pipe Plug Round Stopple Dust Protective Cover Non-slip Mat For Protection Steel Pipe Table and Chair Legs - AliExpress
Socket Head Pipe Plugs in Black Finish - 1/2" NPT (Single) - Edelbrock, LLC.
Amazon.com: Prescott Plastics 1" Inch (25.4 mm) Round Plastic Hole Plugs, Inserts, Black End Caps for Metal Tubing, Hardware Plug, Fences, Glide Protection from Chair Legs and Furniture - Pack of 4 :
Pack of 10) 7/8" Round Snap-On Plastic Tubing Plug, (14 - 20 Ga - 0.71" to