You have a stepper motor, but you need to attach it to your 3D printer project? Not so easy if you don't have a stepper motor mount just like this fine one here! This mount will fit any NEMA-17 motor (with 31mm hole spacing) with four screws. There's six 3.5mm holes, so you can easily attach it. Made of plastic with welded 90-degree support triangles, its got a solid construction.