Each housing is indexed to prevent any chance of mismatching the ends plus they have a molded channel to secure another connector for a tidy appearance. The terminals grip to the wire with strong crimp tabs then lock into position inside the housing. These terminals can handle more current than conventional connectors and do not require special tools.
Connector is waterproof and gives the racer a quick disconnect point if needing to remove a part. Supplied with terminals, seals and housings.