CO2 Build 13 Gantry Things

(4) M3 washers
(5) M3 Slot Nuts
(5) M3 x 8mm
(4) M3 x 10mm
(7) M5 Slot Nuts
(7) M5 Washers
(4) M5 x 10mm
(2) M5 x 12mm
(1) M5 x 20mm

M5 toothed Idler pulley:
https://www.amazon.com/BALITENSEN-Toothed-Pulley-Printer-20Teeth-5mmBore-6mmWidth-Smooth/dp/B07G829TVV/

MGN12H Rail:
https://www.aliexpress.com/item/32806622073.html
If you need it longer,, you can sometimes find them at longer lengths or put two together.

Nema 17 stepper motor
84oz +
https://www.amazon.com/Stepper-Bipolar-Built-Printer-Extruder/dp/B07TQS9ZL1/

GT2 16 tooth sprocket:
https://www.amazon.com/iOrion-Aluminum-Timing-Pulley-Printer/dp/B07DBN8KFT/