Need help with Vexta steppers

Hi,

I have two Vexta stepper motors that I can't find specific specs for.
The model is PH266L-01. It indicates that it is 2-Phase, 1.8 degrees
per step, 6V DC and 1.2A. They have six wires.

I wonder what is the holding torque on those. These came with two
Vexta drivers model UD2115. Any information on those would be
appreciated as well.

Interestingly enough, these came along with two complete axis
assemblies including ball screws and linear rails and bearings. I got
this at a state surplus auction for $57 about a year ago. It also
came with a video camera with macro lens and a zoom/focus controller.

It was a whole assembly that I think was used at the zoo to take
close up looks at insects in their habitat using two joystick
controls. I also have the power supply.

It was a pretty good find. The travel on each axis is around 21". I
am getting ready to put these into action on a home built moving
gantry engraving or routing table. I have very little exeprience with
electronics so I would like to see me control those two axis first.
Once I can do that, I can see how much time and money I am willing to
spend on the third axis.

Thanks

Jacques