Features: Simple leveling, easy to install and adjust the platform, without frequent leveling to keep the printer level. High accuracy, the standard deviation of repeatable 3D for Touch is 0.005mm, and the compatibility is very good The sensor is small in size, simple in structure, and printed when connected. The automatic bed leveling sensor makes the heating bed easy to level. It can accurately measure the inclination of the bed surface, and leveling the bed is no longer a problem. Specifications: Name:BLTouch V3.1 Kit Color: As Pictures for Shell Material: ABS + Metal Size: Mixed Package Includes: 1 Set x V3.1 BLTouch Sensor Kit note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.