These furniture leveling screws are made of metal and rubber, providing toughness, longevity, and corrosion resistance. The deep screw thread ensures that they do not easily slip during rotation or fall off. The round base is smooth and free of burrs, preventing scratches on the floor. The thick and stable base, along with the round rubber base, ensures that your furniture stays balanced and does not harm or scratch the floor. Additionally, these leveling feet serve as sound dampening floor protectors, allowing your furniture to glide quietly and easily without squeaking. With these adjustable leveling feet, you can easily adjust the height of your table and stool according to your preferences and daily needs. The minimum height is 8mm and the maximum height is 20mm when installed. The package includes 22 pack of adjustable leveling feet for furniture legs, with a size of M8 x 20mm. Please ensure that you check the size and dimensions of the product to ensure it meets your needs. We value your satisfaction and are here to assist you. If you have any questions or concerns, please do not hesitate to contact us. We are dedicated to providing the best customer service possible. Thank you for choosing our product. We hope you enjoy it! Key Features: Made of metal and rubber for toughness and longevity Corrosion resistant and anti-rust Smooth and burr-free round base prevents floor scratches Thick and stable base ensures balanced furniture Sound dampening floor protectors for quiet gliding Adjustable height from 8mm to 20mm Package includes 22 pack of M8 x 20mm leveling feet Dedicated customer service for any questions or concerns