Automotive electrical wiring crimping pliers are tools that are used to create secure and reliable connections between wires and terminals in vehicles. They are designed to crimp insulated and non-insulated terminals, open barrel terminals, connectors, and ferrules with different sizes and shapes. Crimping pliers can also cut, strip, and grip wires with ease and precision. There are different types of crimping pliers available in the market, such as ratcheting, hydraulic, self-adjusting, and angled. Each type has its own advantages and disadvantages, depending on the application and preference of the user. Some crimping pliers come with interchangeable nose pliers, which allow the user to switch between different crimping profiles. Some crimping pliers also have ergonomic handles, which provide comfort and reduce fatigue.