Crimp wire into dozens or even hundreds of terminals in a fraction of the normal time. These terminals come attached to a reel that feeds into an automated crimper (not included) for large-volume electrical installations. They also have an open barrel, so you can lay your wire into place instead of threading and poking into a closed barrel.

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.

Connect ground wire for transformers, control panels, and other electrical distribution components without cutting and splicing. Unlike other lugs, these attach in the middle of a run of wire, not the end—just lay the stripped wire into the lug and tighten the set screw.