XTLW3 Z-axis adjustable endstop

The chinese XTLW3 kit uses a very long M3 screw along with a spring and washer to adjust the Z axis home position. This is not very elegant and I designed a printed part that eases the adjustment. You require:

1 M3x40mm screw (you can just shorten the one provided with the kit)
1 M3x10 screw from the kit
2 washer from the kit
1 spring from the kit
3 M3 nut from the kit
1 bed level knob from Thingiverse