Professional Crimping ToolEach ferrule tool kit comes with a quadrilateral wire crimping tool and 1250pcs insulated terminals, for both insulated and non-insulated sleeved terminals, these power tools work with wire ferrules in the range AWG 23 - AWG 7 (0.2510 mm2).Self-Adjusting Ratchet DesignThe ferrule crimp tool connectors are crimped by squeezing the handle for a full ratchet cycle, the design Self-adjusting ratchet improves accuracy and reliability during crimping, automatically adjusting to the proper diameter for stripping terminals to prevent wasted terminals. Ergonomic handle design The handle of the crimping pliers of the crimping pliers ferrule is made of PP and TPR, non-slip, it is extremely comfortable to hold and grip, using the leverage theorem, the operation more of effort, a release the trigger inside the handle, helps you quickly open the jaws. rminals marked on the box, very suitable for storage and transport, you will find 1250 wire end sleeves of the most common sizes, the ferrule connectors are made of copper and polypropylene, strong and sturdy. Multi-FunctionWire ferrules with crimping pliers kit suitable for all types of equipment switches, batteries, cars and home appliances, electronic components with pins, DIY projects and solderless repairs around the house, does a job fast supply of terminals and connectors for electricians, contractors and builders.