Secure wire to screw connections without worrying it will pop off. A go-to for terminal blocks, batteries, and circuit breaker panels, ring terminals encircle the whole screw shank, so they stay put better than spade and hook terminals when vibrated or pulled. They take a bit longer to install, however, because you have to completely remove the screw. Attach your wire with a crimping tool to avoid a damaged barrel and loose connection.

Keep multiple sizes on hand to connect wire without crimping or wire stripping.

Extend a run or repair damaged wire instead of installing a new line. Squeeze the wire splice with a crimping tool for a secure end-to-end connection.

Unlike other twist-on connectors, a silicone filler repels moisture to keep your wire dry and conductive. These connectors twist on and off your wire to save time over crimp-on connectors. You can bury them in soil to power everything from irrigation systems to landscape lights. The connectors have a lower maximum voltage when buried.

Keep different sizes of connectors on hand and twist them onto wires for quick installation.

A good choice for machinery that needs to be frequently disconnected and reconnected for adjustment and repair. These terminals pair with other quick-disconnect terminals, so you can pop them apart whenever you need to break a connection. Attach your wire with a crimping tool to avoid a damaged barrel and loose connection.

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.

A go-to for underground feeder lines, these connectors stand up to pressure and wear when buried in the polypropylene cover. Strip your wires and slide them side by side into the opening. To connect, twist the easy-grip wing for a tight grip on the wire without straining your arm.

The squared shoulders fit more tightly in terminal block gaps than standard spade terminals, so the wire is less likely to turn or jostle.

Spade terminals are faster to install than ring terminals because they don't require you to remove the screw from the terminal block or other connection point. Attach your wire with a crimping tool to avoid a damaged barrel and loose connection.