This product is a Hot Bed Leveling Column, made of solid materials, safe and firm. It can last for a long time without being easily damaged. The product is a practical Heatbed Silicone Leveling Column that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Black -Material:Silicone -Size:1.80X1.60X1.60cm/0.71X0.63X0.63in -Size:1.60X1.60X1.60cm/0.63X0.63X0.63in Outer hole: 9mm Inner hole: 4mm -The traditional springs in the 3d printer are replaced with 3D Printer Heatbed Columns to provide stable and precise printing surface. -The Heatbed Mount Stable Column ensures ample coverage for the 3D leveling and shock absorption needs. -The Heatbed Mount Leveling Columns are designed to be heat-resistant and wear-resistant, ensuring durability and longevity in high-temperature printing environments. -The installation process for the Silicone Spacers is quick and easy, allowing for better integration into the 3d printer. -The Heat Bed Silicone Columns serve as a reliable alternative to traditional springs, offering improved performance and functionality in leveling and shock absorption. Package list: 12 x Heatbed Columns