Premium Quality Our wire lugs are made of tinned copper with PVC insulated, which have high tensile strength as well as stretch resistance. The crimp terminals from water and corrosion, which are durable for long time use. Easy to UseOur electrical connectors are fully insulating and protect electrical connections, more reliable than conventional crimp terminals. Electrical connection terminals are really vital electrical accessories, easy to use, even a beginner can use them easily. Easy identification The different colors (blue, red, yellow) of the electrical wire connector for distinguish different specifications of crimp terminal and make the wires more neat and nice. You can easily choose the right connector by looking at the color. Various ApplicationsElectrical insulation crimp connectors are suitable for household appliances, automobiles, audio speakers and other electrical wire connection projects. The electrical lug is part of the toolbox of every electrician and hobbyist, from DIYers to seasoned professionals. ConnectorThis sleeve insulator set contains 120 assorted butt connectors: 45 butt connectors blue butt BV2 + 45 red butt connector BV1.25 + 30 yellow butt connector BV5.5.