The listing is for 1 pcb of Shunty Power supply
Board is tested and fully functional. It is important that R23 and R24 4E7 resistors must be non flammable metal film or metal oxide. In case that output voltage vary , these resistors value should be decreased .
It is perfect pick as PSU for Kaneda D.I.Y. kit
pcb is FR4 1.6mm 2oz Blue immersion silver