Silicone Material: the 3D printer bed mounts are made of quality silicone material, stable and flexible, with nice heat resistant feature, can nicely reduce the vibrations when working, providing good leveling performance for your 3D printer Ample Amount: the package contains 12 pieces of 3D printer heatbed parts in brown, which are designed to replace your springs under the heated bed, sufficient quantity can meet your daily use and replacement needs Suitable Size: the heated bed mount measures approx. 4 mm/ 0.16 inches in inner diameter, 18 mm/ 0.7 inches in height, which is easy to level your 3D printer and remain your set levels Compatibility: the silicone bed leveling mounts are compatible with CR-10 and Ender 3 series 3D printers, they will install effectively and stably on your 3D printer, will not easily move Simple to Store: with compact size and lightweight, the 3d printer parts are easy for you to store in your tool box, occupying a little space, also very convenient to take out when needed