Wide Crimping Range: We designed this crimping tool to address the pain point of not having a suitable crimping tool for large ferrules.While it may not be as convenient and effortless as professional crimping pliers, it is simple to operate and can be completed by a single person with just a hammer. Features: The crimping pliers are suitable for 23 to 4/0AWG,and the jaw size can be freely adjusted according to the size of the ferrules. Excellent service: lf you have any problem, please contact us and we will solve it for you within 12 hours.