The main advantages of wire ferrules are: To make a nice, clean and secure connection to a terminal block. Prevent wire strands from spreading out of a terminal possibly causing a short. Provides 100% contact to wire. High Quality : 800 pieces High Quality Ferrule wire Terminals Connector Kit. Wire connector types: Cord Pin End Terminal.Wire Range: 22-10 A.W.G, 0.3-6.0mm2 Electrical connectors allow visual inspection, prevents corrosion, and provided a waterproof seal Easy To Crimp Step 1: Braid the Wire. Strip the insulation off the wires if you haven't already. Take the exposed end, and twist it between your fingers until the wires are all wound in a helix. Step 2: Insert into Crimp. Put the wire into the crimp until it gets to a metal tab. Step 3: Crimp! Grab the crimp in your crimping tool.