Features: The BIQU MicroProbe adopts High Precision chip,Micron level trigger accuracy ensures perfect auto bed leveling. Accuracy is 0.001mm StandardDeviation 24°C,0.003mm StandardDeviation 60°C,compared to ordinary sensors, the accuracy is improved by 10times. High quality material，wear-resistant and durable,with a long service life of up to 10,000,000+ Probing Tests, will be a durable for your printer BTTmicroProbe is 25.3mm in Length,6g in weight Light, it adds almost no weight to the extruder and upgraded high precision leveling capability. Easy installation, and with led light,suitable for Ender3/BIQU B1 extruder Same wiring asBLTouch. Can be used in any kind of print bed material likePEI/Sticker/Glass/Metal and so on... Specifications: Item：MicroProbe Auto Bed Leveling Sensor Kit for Ender3 BIQU B1 Extruder 3D Printer Compatible withSKR Mini E3V3.0 OctopusV1.1 SKRV1.4 TurboControl Board Package Includes: 1 Set MicroProbe Auto Bed Leveling 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 0-1cm error due to the manual measurment.