It is exactly this....3d design but simpliest dripper
Air holes will be 1,2-1,5, 2, & 3 and dual 2χ 1,5
Price will be 80 Euro
It is shorter than 3d, different holes, and less expensive...
It will come in nemesis thread, 69 thread 03 510 thread
With the lines like the photos(Ice) or without lines...