Wire with Brick 2 x 2 x 2/3 with 1 x 2 Studs and Power Functions and 9V Connectors, 50cm, One Light Bluish Gray End

Reference

58118

Wire with Brick 2 x 2 x 2/3 with 1 x 2 Studs and Power Functions and 9V Connectors, 50cm, One Light Bluish Gray End (part 58118) is a LEGO element. CollectORbuild's catalog records it in 4 sets, including Power Functions Extension Wire 50cm and Renewable Energy Add-On Set.