1、COMPATIBLE MODELS: Specially designed replacement mounting bracket for BL Touch, suitable for Elego for Neptune3 series 3D printers, such as for Neptune3 Pro, for Neptune 3 Plus, for Neptune 4, for Neptune 4 pro. 2、ENSURE SMOOTHNESS: Auto leveling sensor bracket mount holder helps to levels the bed automatically, ensuring a smoothly and precise printing experience. 3、EASY TO INSTALL: For BL Touch bracket sensor holder bracket is quick and easy to install, just determine the position to install, very convenient. 4、PERFECT REPLACEMENT: Replace broken, damaged, cracked, and unusable hot bed leveling sensor bracket, perfect replacement. 5、LONG SERVICE LIFE: 3D printer auto leveling sensor rack mount is made of cold rolled plate, sturdy and durable, fine workmanship, long service life.