Plastic Z (for sale)

Hi,

I realized that I have a lot pieces of plastic, and some leftover parts from CNC. So I decided to build some small Z axis, that will be sold.
Technical parameters:
- supported rails 12 mm with 4 linear bearings
- Tr 10x2 screw with brass nut
- 0,4 Nm motor with direct connection to screw
- spindle holder 43 mm ( for example: KRESS)
- about 95 mm of movement range
It is still not finished as I do not have two ball bearings, that will be used to place screw, and I have to clean it up. But it will be done soon.
Some pictures:

Back of the axis and mounting. I am disappointed of it, but i have to sell it like that. 

This is one-time offer.