About this 3D model

This is a printable spidercoupling. It connects a stepper with a 5mm axis to an M8 drive screw. Both parts are uploaded below as separate STL-files. You will need 4 M3x10 bolts + nuts to finish the part. This thing is part of a design for a small CNC milling machine. More details can be found at http://www.repairablemachines.com