【Professional Crimping Tool】Each ferrule tool kit comes with a quadrilateral wire crimping tool and 1200pcs insulated terminals, for both insulated and non-insulated sleeve terminals, these electrical tools work with wire ferrules in the range of AWG 23 - AWG 7 (0.25-10mm2). 【Self-Adjusting Ratchet Design】The ferrule crimping tool connectors are crimped by squeezing the handle for a full ratchet cycle, the self-adjusting ratchet design improves accuracy and reliability during crimping, automatically adjusting to the appropriate diameter to strip the terminals to avoid wasting terminals. 【Ergonomic Handle Design】The ferrule crimper pliers handle is made of PP and TPR, non-slip, it is extremely comfortable to hold and grip, using the leverage theorem, the operation more effort, one release the trigger inside the handle, help you quickly open the jaws. rminals marked on the box, very suitable for storage and transportation, you will find 1250 pieces wire end sleeves of the most common