hey guys, this is just a gantry clip for your m3d micro printer,,, this is the same as the one that comes when you buy the printer and this is if you loose them and/or you have to transport your m3d printer and want to do it safely, for best results have the quality on medium-high have fill density at medium or full don't change size as it is perfect fit for printer,,, to attatch just open the little notifications triangle thing at the bottom left and right click the m3d icon, click out of it and the spooler will appear,, open the menu where you can change the position of the extruder and make it so the extruder is as far forward and as low as possible, then attach and if you don't know then just search up m3d printer unboxing to see people remove the gantry clips so you see how they were positioned.