This heat shrink tubing set is a great choice for electricians, DIYers, and service work. In one package you get various diameters and colors, making it easy to choose the right tube for insulating connections, repairing wires, or clear color-coded cable identification.
Shrink using a heat gun (electric or gas, ideally with temperature control). When working, ensure even heating around the circumference so the result is smooth and without wrinkles.