This is a servo saver designed especially for use in gas vehicles. It features a stronger spring that improves steering control by eliminating servo saver flex, and it should only be used along with a steering servo that has metal gears. Do not use it with plastic-geared servos because the high strength spring inside will strip the gears. one servo saver per package. Includes: 1- servo saver 1- servo horn screw 3- servo adapters (Airtronics,Futaba,Hitec,JR, and KO). wem 10/26/93 Update gab11/10/93