Material: These furniture leveling screws are made of metal and rubber, offering more toughness, longevity, and corrosion resistance, anti-rust. The screw thread is deep, making it not easy to slip during rotation and not easy to fall off. No More Scratches: This product features a round base, smooth surface without burrs, and exquisite workmanship. Thick base, strong and stable, the round rubber base will not damage or scratch the floor. No Squeaking: These leveling feet are a solution for uneven table legs. You can install them at the bottom of your product to keep it balanced, also acting as a sound-absorbing floor mat, allowing your furniture to slide quietly and easily without squeaking. Height Adjustment: With this product, you can adjust the height of the table and stool according to your preferences to meet your daily needs. The minimum height is 8mm and the maximum height is 20mm when installed. Size: M8*20*20 Delivery quantity: 24 pieces, Products from GuanGuan's store