Package Include: (3pcs 0.63inch+9pcs 0.7inch) 18mm Heatbed leveling column silicone x 9, 16mm Heat Bed Leveling Spring Replacement Part x 3.
Features: High-quality silicone material, effective shock absorption, not easy to deformation, perfect replace the springs under the heated bed.
Advantages: High temperature resistance, compared to the spring contact surface is larger with better stability, good elasticity, good fatigue resistance, shock absorption, can be freely adjusted.
Application: 5Aplusreprap 3D printer heat bed leveling silicone column for most 3D printers, such as ender 3, cr10 etc.
Tips: Usually a printer requires 4 leveling silicone columns (3 high and 1 short).