About this 3D model

I created these adapters for funnels with different pitches, one with 2 pitch threads, one with 2 pitch 3 threads and one with 1 pitch 1 and pitch 3 thread so as to adapt to most pet bottles in circulation to act as a funnel using bottles cut in half as shown in the photos, they adapt perfectly to any eventuality, the adapters indicate which thread they are via the writing I made on the adapter itself