NEMA 17 to NEMA w/ Planetary Gearhead

This mounting plate should let you mount a NEMA 17 with built in planetary gearhead (like this one:http://www.phidgets.com/products.php?product_id=3317_1) to a screw pattern meant for a normal NEMA 17 stepper.

I've used it to mount a planetary motor to my Seemecnc EZStruder.