Ferrules and crimping
The most commonly used aid in the assembly of cables is the ferrule. These are standardized in DIN 46228.

Ferrules for fine strand copper conductors:
In the field of electro technology, the use of an extremely effective aid, the ferrule, is on the rise for the processing of fine strand copper conductors in different terminal points. Originally, non-insulated ferrules were used, but from 1970 onward, the insulating sleeve became common. In 1991, the market for ferrules was revolutionized by the invention of a ferrule for two conductors with the same cross section.