To be fitted to a Trigobot, modified Rostock delta printer. Changed from johan design. Fitted for Rostock platform with correct center holes and j-head slip in. Changed to new motor due to difficulties to get the PG35L-048. This is for motor from 2engineers.com. Might also find this motor in china..... aliexpress or simmilar.... Works fine. Good grip on the fillament. Have not tested the fast change fillament feature yet. I have downloaded the model in stl, converted to Autodesk Inventor File, redrawn and changed distances and hole placement to fit a Trigobot (Rostock delta printer)