There's a reason they're so cheap compared to the usual industry standard name brand connectors. They are very cheap and like some of the others here I had a fit issue connecting the connectors. The pins seem to slip out of alignment within the connector very easily. This is a fantastic buy (a lot for the price) but if you're looking for something durable and reliable I highly recommend spending the extra money just for a standard connector from a reputable brand. I will not continue my project with these connectors.