Wire with Brick 2 x 2 x 2/3 with 1 x 2 Studs and Power Functions and 9V Connectors, 20cm, One Light Bluish Gray End

Reference

60656

Wire with Brick 2 x 2 x 2/3 with 1 x 2 Studs and Power Functions and 9V Connectors, 20cm, One Light Bluish Gray End (part 60656) is a LEGO element. CollectORbuild's catalog records it in 3 sets, including Mechanisms Power Add-On Set and Power Functions Extension Wire.