Blue and black impeller

[dzhuo]

Roger,
I recently bought 2 6105 and today I realize one of them has a blue impeller while the other one is black. Is there a difference between the 2? Any idea why one of them is blue?

 

[rvitko]

The blue propellers came out in late June. They are new, up until June we bought propellers made for model boats and modified them, we now injection mold our own propellers and went with the blue color, the new plastic is a bit more flexible so it takes impact better if something gets in the pump, other than that there is no difference in flow or performance.