Standard shape high precision metal pipeIdeal for upgrading energy lines!A lathe-processed product made by plating brass. A metal pipe (color) with a standard shape for improving energy line detail. There is a small step on the side, and it claims to exist especially when connecting multiple pieces. Since the width is designed to be narrower than the conventional product, the followability is also improved when using it in small parts and curves that were difficult until now. For connection, use a precision spring (sold separately) and a wire, etc. together.