It was not for construction, etc., but the extension code of 10 m was not quite, but found and purchased immediately. It was enough for 9 meters. The wiring was covered and it was finished neatly. Quality is also good. GOOD
Honestly, I chose this product is only length. 3 m really is exactly right. There is a story that the big doubles as small, but the code is a lie ^ ^ 5 m and 3 m are different things. The feeling of use at 3 m is the highest.