Features: The 3D Touch automatic leveling sensor uses the Hall effect to achieve leveling. The position of the touch pointon the hotbed can be obtained, and then compensated by adjusting the Zaxis height during the printing process Realize printing even when the printer platform is uneven Product features: Intelligent leveling, intelligent compensation for Zaxis height Make leveling more intelligent, simple, and precise with extremely high leveling accuracy. Smartpositioning sensors provide higherconsistency Specifications: Material:Plastic Item:3D Touch Sensor Kit Size：approx 47x26mm/1.85x1.26in For:AnetA8 Tevo Reprap MK8 Ender3 Pro 3D Printer Part Package Includes: 1 PC 3D Touch Sensor Kit note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!