【Professional Crimping Tool】Each ferrule tool kit comes with square wire crimping tool and 1250 pcs insulated terminals, for both insulated and uninsulated ferrule terminals, these power tools work with wire ferrules in the range AWG 23 - AWG 7 (0.25–10 mm2). 【Self-adjusting Ratchet Design】The ferrule crimping tool connections are crimped by squeezing the handle for a full ratchet cycle, the automatic ratchet adjustment design improves precision and reliability during crimping, automatically adjusts to the appropriate diameter to strip terminals to avoid wasting terminals. 【Ergonomic Handle Design】The ferrule crimping pliers handle is made of PP and TPR, non-slip, it is extremely comfortable to hold and grip, using the lever set, more effort, one releases 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 ferrules in the most common sizes, the ferrule connections are made of copper and polypropylene, strong and sturdy. 【Multifunction】Wire ferrules with crimp kit suitable for all types of equipment switches, batteries, cars and household appliances, electronic components with pins, DIY projects and solderless repairs around the house, gets the job done quickly delivery of terminals and connectors for electricians, contractors and builders.