The units were very expensive, but I would like to assume this would infer a level of quality. They seem to work well, although somewhat odd from what wij were used to before.??? ??? ?? ??? ?? ??? ????? ????? ?????? ?????. ??? ??? ??? ??? ?? ? ??? ???? ?? ??? ??? ??????.The area between each row ofwel pins kan zijn perfectly spaced to allow DIP ICs