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Amazon.com: 1 inch Square Tube Unistrut end caps, Suitable for Frame Hole Tube Plugs, Chair Leg Inserts, Glide Protection for Furniture and Floor by Prescott Plastics – Pack of 4 : Industrial & Scientific
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Amazon.com: EZends 1.5 Inch Square Tubing End Cap Plug, 10/14 Gauge, 8 Pack, Durable Black Plastic LDPE, Chair Glides, Furniture Floor Protector, Chair Leg Caps, : Industrial & Scientific
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Indital Stainless Steel End Cap Decorative Semispherical for Tube 1 2/3" Dia., M10 Thread - End Caps
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