Yeah I can supply cut lengths.
100mm 3 inch for $15
100mm 2.5 inch for $13
Reducers are pretty cheap as is I think youll find .
Elbows arent cheap 3 inch 90 degree is $65
other sizes available .
yeah theres blue and blue
I will check if others are available.
I also have 3 inch to 2.5 inch reduders for $39 and can get different sizes, elbows etc