Tapio:
I really don't have any good info because I haven't opened the box up. The web instructions say it requires tail wires. It should be a very quick-building plane. I checked out a wing for the 31% and it looked good. The kit is less $ than an Aeroworks or Carden of similar size, saves you a lot of work with the pre-sheeted wing, stab, rudder, turtledeck, and has to come out lighter because of the extensive laser cut lightening holes. Jump in, the water's fine.