These connectors were expected to be on the lower quality side and they were. Cheap but worked ok. Often the process of crimping with my professional grade crimping tool made the male spade move to the sidewall of the plastic, and often the whole metal part inside the plastic "cowl" ended up loosely bouncing around inside that cowl. Beware some -- perhaps 10% -- of the female connectors are too loose, meaning you must give them a slight pliers pinch to get a good electrical connection when you slide the male connector in. The "industry standard" high quality version is made by Thomas & Betts but I went for cheap this time. Bottom line: these connectors are adequate and more tedious to use but cheaper than the state-of-the-art Thomas & Betts connectors.