http://www.ebay.ie/itm/Digital-Stepper-Motor-Kit-4Nm-x-3-Axis-Mounts-CNC-Parts-Mill-Router-DIY-Hobby-/112150278299?hash=item1a1cad709b:g:zVYAAOxyaURTiIQ E it is for a cnc 4foot by 4foot made out of steel.
we have that kit in the shop, it`s a very torquey motor, im gonna use that kit for the CNC 2015, to be able to run the machine faster and right now the max speed on the FRO is only 1000, beyond that it will stall, but on that motor it can run up to 4000 FRO, X4 speed.