I recently purchased these connectors for a job in the Industrial and Scientific industry and was thoroughly impressed with their performance. The connectors were easy to use and held the wires tightly in place without slipping or coming loose .Their compact size allowed for easy installation in tight spaces and they have a durable construction that promises long-lasting use. However the only downside is that they can be hard to disconnect once in place. Overall, i highly recommend these connectors for any industrial wiring needs..