These are DU-BRO Micro Pushrod System.  DUBRO847 

   Used with Indoor and Park Flyers.

FEATURES:

Lightweight, Flexible, and strong pushrod wire.
          Solid wire pushrod
          90° bend on one end of pushrod.

INCLUDES: Two Micro pushrods.
          Two Mini EZ connectors
          Two Micro EZ link
          Instructions

REQUIRES: DU-BRO Control Horn (DUBQ1986)
          Micro Clevises, DUBQ0917

SPECS:    Length: 20"
          Diameter: .032