3m Scotchlok Electrical Connector. Grease filled moisture resistant connector. Make inline, pigtail and tap splices on 14-18 AWG solid or stranded wire. Automotive, truck, boat and trailer wiring jobs are easier and faster with a pair of pliers. Blue, polypropylene-insulated connector electrically taps into a wire in mid-span without cutting. Sold by the box of 25.