[PREMIUM QUALITY] Heavy-duty battery cable ends are made of good conductive, heat and corrosion resistant purple copper to ensure the reliability of the connection. Surface pickling mitigates oxidation. Standard lugs opening facilitates wire insertion. The inspection window is designed to check the correct and complete cable insertion. Each wire lugs has a specification mark, so you can quickly find the right terminal. Copper wire lugs can be easily and safely crimped or soldered to the cable,[EASY INSTALL] Battery lugs are used in conjunction with heat shrink for power draw or grounding, making wiring safe, reliable and work professionally. Flame retardant and insulated heat shrink is made of polyolefin, which is pre-cutting into common sizes for selection to improve working efficiency. Crimp or solder cable into copper wire lugs, insert heat shrink, apply to heat. It will shrink quickly and wrap cable well. Red and black color make us quickly identify positive and negative cables,[COPPER LUGS KIT] For electrical, various sizes of wire lugs are needed to carry sufficient amperage between components. 200pcs wire connectors kit has a assortment of terminals for you to freely choose, Including 10 types of 100PCS of AWG 2 4 6 8 10 copper wire lugs, 3 sizes of 100PCS of heat shrink tubing. SC Ring Terminal set can help you connect tightly to the cable more easily and safely. Please note that when crimping, make sure to choose copper wire that matches wire connectors diameter,[WIDE APPLICATION] Battery cable ends are connector from wire cable to electrical equipment that serves to stabilize the installation and prevent short circuits and ensure reliable connections effectively. It is suitable for emergent cable repairing. We recommend this wire lugs kit for terminal wiring of professional equipment, such as distribution boxes, batteries, cables, etc. It can also be used for audio, motorcycles, automotive, marine, household appliances, toys, solar, etc,[PORTABLE, WELL ORGANIZED] Battery cable lugs set is handy to carry around. They are neatly separated and protected in a storage box. You don't have to worry about mixing up. We recommend you check wire lugs size to ensure proper fit before use. This copper wire lugs kit is more effective for electrical work when used with a good crimping tool or soldering gun. If you have any questions about our battery cable ends, please let us know immediately and we will give you a satisfactory solution