These connectors are a game-changer for automotive wiring projects! Industrial and Scientific-grade construction ensures top-notch quality and durability and the waterproofing guarantees they'll hold up in any conditions. Through trial and error, i found that they provide a strong and secure connection that wont come loose over time. The only downside is that they can be a bit tricky to crimp onto wires, but a little care and patience will ensure a great result.Overall, I highly recommend these connectors for any automotive or industrial wiring needs!