The Wire-Wrap system limits the electrical connections to the two necessary mechanical elements: the wire and the terminal. The wire wrapping tools consist of the tool, bit and sleeve. The tool wraps the solid round copper wire under mechanical tension with several turns tightly around the edged terminal. On the edges of the terminal we get a corrosion-safe and gastight connection. There are three different sorts of wrapping bits: Modified, Standard, and C.S.W. bits.