Legs for the printer regulated on height

Legs for the printer regulated on height. For exposure of the printer on level, or on not a plain surface.
I used the plastic PLA, filling of 25 - 35%, under the basis it is possible to enclose rubber/silicone.
For assembly were used:
The M4x35 screw - 16 pieces, M4 Nut - 16 pieces.
The M10x80 screw - 4 pieces, M10 Nut - 4 pieces.
It is possible to replace M10x80 screws with M10x60