HIGH QUALITY - Material: Plastic, Total Size: 25 x 15mm/1' x 0.59'(D*H), Thread Diameter: 24mm/0.94 Inch, Package Include: 24 x Tube Inserts, the tube inserts suitable for leg diameter: 22-24mm/0.87 Inch-0.94 Inch FLOOR PROTECTOR - This tube insert protect your beautiful hardwood, ceramic tile and vinyl plank floor from marring and scratches REDUCE NOISE - This tube insert can greatly reduce the noise, you should no more worry about suffering a harsh sound when moving the chairs and tables EASY INSTALLATION - For easy installation, each tube insert comes with ribs, only requiring lining up with the tube before tapping it into position. Ribs provide a secure fitting and to prevent the need for additional adhesives The size is slightly larger than what you need? Do not worry about it. Just cut a bit of the ribs to fit the application leg. If you have any problems about the size, please contact us by email