Features: brand new and Made of high-quality materials, exquisite workmanship, very good quality and long service life. Automatic leveling (need to match original model motherboard) Do not turn out the wire at the sealing glues, otherwise it will easily lead to induction function failure. On the installation of the mounting block when the screws can not be screwed too tight, properly tightened without wobbling, otherwise it will lead to additional stress on the mounting block affecting the induction piece, thus affecting the performance of the leveling switches. After the installation is completed, first of all, the Z-axis lift, with tweezers or other tools to gently touches the nozzle continuously and at the same-time observe whether the integrated motherboard connected to the induction piece of the indicator light will light up at the same-time as touches the nozzle, the induction mounting block in the state of no trigger indicator is alway off that is normal. Specifications: Material:Metal Length:Approx.34mm/1.34inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Hot End Mounting Block