Made in USA 2" Inch (50mm) Round Rubber Plugs for Holes, Flexible Black Rubber End Caps, Hardware Plugs, Metal Tubing Post Rubber Cover Protective End Caps for Furniture by Prescott Plastics -
Amazon.com: 12Pcs 3/4" Inch Round Plastic Plug, End Caps for Tubing Pipe with OD 20mm 0.75" (not ID), Steel Furniture Foot Table Chair Leg Blanking End Insert Plug Cap Cover : Industrial
Amazon.com: Prescott Plastics 1" Inch (25.4 mm) Round Plastic Hole Plugs, Inserts, Black End Caps for Metal Tubing, Hardware Plugs, Fences, Glide Protection from Chair Legs and Furniture - Pack of 10 :
Explosion-Proof Conduit Plugs and Caps - Results Page 1 :: Main Electric Supply
EMT Conduit End Cap | Conduit End Plug | Maker Pipe
Capital Electric Supply
Tapered Conduit Plug - Kraloy Fittings
Chain Link Black Pipe Plug for 1 3/8" Pipe or 1.125" ID - Internal Pipe Cap (Polyethylene) | Chain Link Fittings
Made in USA Prescott Plastics 3/4” (19.05 mm) Round Rubber Hole Plugs, Vinyl End Cap, Black Rubber Caps for Metal Tubing, Fences, Glide Protection for Chair Legs and Furniture (10 Pack) - Amazon.com