20x20 Mm Square Tube Plug Plastic End Cover For Blanking Tube Cap. Pad Arched Ball Head Surface Round Shape Chair Beach Bed - Furniture Accessories - AliExpress
25/40/50mm Black Blanking End Cap Square Tube Insert Bungs Pipe Box Chair Plug Home Furniture Feet Business Office Fasteners - Ball Joints - AliExpress
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 - - Amazon.com
Domed End Cap - Brushed Stainless Steel - 2" OD
20 Pieces 25 mm/ 0.98 Inch Black Plastic End Caps Plugs Chair Leg Inserts for Metal Legs Round Tube Inserts Chair Leg Glide Furniture Protectors (Fit 1 Inch Tube) - - Amazon.com
Table Chair Plastic Round Head Tube Pipe Insert Cap Cover Black 25mm Dia 40pcs 602451908678 | eBay
Decorative Iron Caps - Order Online! | Steel Supply LP
Rectangular Angled inserts for tubes & pipes 15mm - 50mm - Vital Parts