Size: The height of the 3D printer hot bed silicone leveling column is 18mm/16mm, the outer diameter is 16mm, and the inner diameter is 4mm. Material: Made from silicone, these leveling columns offer excellent durability and flexibility. Larger Contact Surface: With a larger contact area compared to traditional spring leveling systems, these silicone columns effectively reduce shock and vibration. This design enhances the stability of your 3D printer, resulting in improved accuracy and a smoother printing process. Replacement for Spring Levelers: These silicone leveling columns are specifically designed to connect at the base of the 3D printer hot bed/platform. They serve as a reliable replacement for original spring levelers, providing a more consistent and easy leveling experience. Two Height Options: This set includes 12pcs columns at 18mm and 12pcs at 16mm. The variety in height allows you to customize the leveling for different 3D printer models, ensuring optimal performance and better print quality for your projects., Manufacturer: eMagTech