The production is average. Good protection Copper ... But because there are but: - No distinctive colored marking positive. He must be content to observe the cables, one is thicker than the other and to follow through ... Bad point. - The cable strands are not or are hardly twisted. It is cheaper for the manufacturer, but also months effective in use. - Difficult to separate the 2 cables. The operation must be surgical. - The packaging is in single cellophane stretched film without winding spool. A real ball of excitement ... Short 1 Chinese prices that do not rebuterait a skilled handyman of his hands. The price is a little high for what it's worth ...