New 20-piece set of 5/8 x 5/8 plastic tubing end caps designed as square hole plug inserts for square tubing or similar openings. These caps can be a practical option for covering exposed tube ends, helping finish a project more neatly and making replacements easier when worn or missing. Free Shipping is included, which may be useful if you need a small hardware pack without added delivery cost. Buyers looking for matching size should pay close attention to the 5/8 x 5/8 measurement to confirm fit before ordering. Material is listed as plastic, but other product specifics are not provided here. Check the listing for full details. 5/8" X5/8" Plastic Tubing End Caps, 20Pcs Square Hole Plug Insert for Square Iro. Color: Black, Condition: New. Listed at 9.74 USD. They can also protect sliders on furniture chair legs, table legs, bookshelves, and patio furniture. Fixture Type Removable. Square Hole Plug is waterproof, strong, and abrasion-resistant, suitable for preventing wear and tear on wooden floors and reducing noise.