This little part makes it a lot easier to mount the z-axis sensor. This little part makes it a lot easier to mount the z-axis sensor. The corner makes it stable with one screw. Thereby the sensor can be mounted with two screws on the little part. This makes the whole situation a lot more stable. The long screw above the sensor can be rotated 180 degrees. Then it fits perfect on the sensor and a LOT easier to use tools to configure the z-axis. The holes for the screws were made by putting the part on the underground and then drill the holes on position. holes of 2.3 mm are perfect, because this can be screwed and gives more strength.