Summary I'm not sure what name should I give, stepper motor bracket, stepper motor wire clamp or something. By the way, this design is actually for my hot end cable and to fix it in place because there might be a chance that the hot end might become loose due to slight stress from the wire moving back and forth. The clamp size are measured around 5mm, which clamps the teflon wire cover. Also suitable mainly for Geeetech single extruder style and for other purposes of mounting this on any stepper motor for some cable management. For mine, I added extra platform so I could stick my led array there but it kept falling off (using foam double sided tape) Update I added several design to the cap, one has flat end until the clamp, one is flat same thickness as the flat surface of 2mm, another is 3 point open end so you can mount it anyway you like it Instructions Can be printed with 10% infill, 3 wall and 4 tops/bottom. This is to ensure the other end still offers flexibility especially mine with pla plastic For geeetech owner, do make sure to limit your max X axis movement because this bracket can hit the z axis threaded rod. Mine limited up to 185mm without any offsets from endstops You might be having trouble putting on m3x24 nut at lower back, I suggest you mount it from the back and use pliers to hold the nut while turning the screw