The package includes 2 X10’s for flaps, 2 X10 mini’s for ailerons, 2 X12-508’s for the tail & 4 ballraced servo frames. Ideal for pilots who want the best and are unwilling to compromise. Powerful, responsive coreless servos with additional ball raced supports for the wing will provide the tightest most accurate control possible. Ideal for all F3f/F3b style airframes and larger sports slope soarers. For best performance use on 5 cell nimh battery packs and unregulated on 2s Lithium packs.