This jack is good quality with well-fitting parts. The only piece I was unable to use was the spring coil strain relief extension. It was too small for the conductors I used in my headphone cable. Without the strain relief, the body of the jack had a large enough opening to accept my conductors. Soldering of conductors to the jack terminals requires a steady hand because of the small size of the terminals. (This operation would seem to be inherent in most if not all 3.5mm and smaller jacks and is not specific to this particular product.) However, the jack is easy to use and works well once assembled