Check the listing for details. 4Pcs Inserts for Round Tubes with Leveling Feet, for 50mm/1.97" OD Round Tube. Condition: New. Listed at 13.93 USD. Description:[Material] Made of black plastic, has an adjustable height, is not easy to deform, and has more stable support. Great for long-term adjustment of furniture height, easily level your chairs and tables.[Keep Balance] If the floor is rough or the leg of the product is bad, you can install it at the bottom of your product to stay balanced. It can effectively protect the product during the movement, prevent scratches, and reduce noise.[Easy Installation] The chair leg plug comes with ribs, only requiring lining up with them before tapping it into position. ribs provide a secure fitting and prevent the need for additional adhesives.[Application] The adjustable leveling foot is for office or household furniture. such as mechanical equipment, fitness equipment, racks, TV stands, tables, shelves, beach chairs, desk legs, and so on.