Save time when installing lots of terminals at once or adjusting a connection. Unlike ring terminals, spade terminals don't require you to remove the screw from the terminal block or other connection point. Just loosen the screw slightly, slide the terminal under the screw head, and tighten. Since ring and hook terminals hold a bit more securely, spade terminals work best when vibration and yanked wires aren't a concern. Attach your wire with a crimping tool to avoid a damaged barrel and loose connection.