About this item 【Professional Crimping Tool】Each ferrule tools kit comes with a quadrilateral wire crimping tool and 1200 pieces insulated terminals, for insulated and uninsulated sleeve terminals, this electrical tools work with wire ferrules in the range of AWG 23 – AWG 7 (0.25–10 mm2). 【Self-Adjustable Ratchet Design】Ferrule crimping tool connectors are crimped by squeezing the handle through a complete ratcheting cycle, the ratchet self-adjusting design improves accuracy and reliability during crimping, automatically adjusting itself to the appropriate diameter for stripping terminals to avoid wasting terminals. 【Ergonomic Handle Design】The ferrule crimping tools wire pliers handle of the wire crimpers is made of PP and TPR, non-slip, it is extremely comfortable to hold and grip, using the leverage theorem, the operation more effort, a release trigger inside the handle, help you quickly open the jaws. 【Portable Wire End Set】The ferrule crimper plier with a practical sorting box, information on the terminals 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 with copper and polypropylene, strong and sturdy. 【Multifunction】Wire ferrules with crimpers pliers kit suitable for all kinds of equipment switches, batteries, cars and household, electronic components with pins, and DIY projects and solder-less repairs around the house, makes short work of terminals and connectors for electricians, contractors and builders.