Rudder pivot bolt & wing nut#chr(59)# also includes washer. Used on the old style RS Tera#chr(59)# RS Q'BA#chr(59)# RS Feva that use the Seasure stock and on all RS Vision#chr(59)# RS Vareo#chr(59)# RS1#chr(59)# RS2#chr(59)# RS4#chr(59)# RS5#chr(59)# RS7 and RS8.