I have found this connector to be of very high quality - the best I've experienced in a speak on connector. The plastic seems to be very robust, and has not shown any sign of wearing away, like connectors of lesser quality I have used. This is quite remarkable, as I have been using this connector very frequently for around five years! The connectors locking mechanism works very well also, and has never failed to prevent the connector from slipping out of place whilst in use. The only thing I would suggest being aware of with this connector is that it is a little difficult to connect larger cored cables to it.