Thanks Arch,
These look like good elec. spinners, at a very good price.
I have been using the beautiful TruTrun Electric spinners, they seem to work very well and are works of art. They come in many sizes, colors,2 or 3 Blade, and they will custom cut them for any prop you want if needed. They cost more than the E-flites, but they are a great alternative if you want a beautiful, light, E spinner and don't want to try and cut your own slots.