Wide-jet pipe for Fish Tanks (fits on 20 mm Eheim Kits)

This is a wide-jet pipe for my Eheim 250 Pro 3 Filter. The inside diameter is 20 mm. It fits on Eheim Installation / Water Kit and other 20 mm Pipes.
You have to scale it a little bit, depending on your Nozzle size. On my 0,35 mm Nozzle works a scalefactor of 1.04 and it will fit on 20 mm Eheim Kit.