I have 8 of these, 7 have stepped down stubs for 3/16" props. The long one has 1/4 stub.
I measured the flex portion and not the stub, or overall length, so the length is how much flex you have to work with.
3 pieces 14 inches
1 piece 15 inches
2 pieces 16 inches
1 piece 16.5 inches
1...