Professional Grade Ratchet Wire Crimping Tool

Brand NEW Crimper 

Used on the following applications:

Universal
 

Suitable for insulated terminals
 

Position 1: 0.5 to 1.0 mm

Position 2: 1.5 to 2.5 mm

Position 3: 4.0 to 6.0 mm

Crimping was invented by AMP Incorporated in 1941 as a solderless method for terminating wires and connectors.
When done right, a crimped connection can be much stronger and longer lasting than a soldered connection, and have electrical resistance of the equivalent lenght of wire.
A properly done crimp is also gas-tight as well, not allowing oxidation to degrade it over time.
Note your factory connections are all crimped.