This 530 piece solder seal wire connector set is perfect for any job I might ever need it for! I love that it is heat shrink tubing so that I can fit two parts of the wire together and when I heat shrink it it will stay! I have already used it on my auto electrical fixing my airconditioning fan wires! Now I will be cool during this awful heat we are having! This comes in a perfect carrying and storing case too! Next on my list is the wiring for the boat dash board!