Includes 2ea of the standard and button flappers that will provide enough to replace any requirement for V1, V2, V3 and V4 valves, with the exception of pre 1998 versions of V1; replace with new V1 valve. The valve arm and link will not fit the older RCV-75 valves, but the standard flappers, O-rings and cable mounting bracket will fit all with the above mentioned exception. Contains: A. Small O-ring, B. Button flapper - 2 qty, C. Flapper - 2 qty, D. 6 x 5/16" sheet metal screw, E. Arm, F. 6 x 1/2" sheet metal screw, G. Link, H. #6 x 1/2" machine screw, I. Clamp, J. #6-32 nut w/ insert, K. Large O-ring.