Color-coded twist-on standard wire connectors
Used to splice two or more wires together without taping
They are mainly used by electrical contractors, auto & truck repair shops, industrial maintenance shops, etc.
 
Product ID:
3346 - Gray Wirenut – 1000 pk
3347 - Blue Wirenut – 1000 pk 
3348 - Orange Wirenut – 500 pk 
3349 - Yellow Wirenut – 500 pk