The package includes 2 DS125MG’s for flaps, 2 DS135MG’s for ailerons, 2 DS215MG’s for the tail & 4 standard servo frames. Ideal for pilots on a budget that do not want to compromise on quality, reliability and performance. Perfect for any F3f/F3b style airframes and larger sports slope soarers. Must only be used on 4 cell Nimh battery packs. Can be used on 4 cell Nimh & Lithium packs but with a 4.8v-6v regulator.