This crimping tool for heat shrinks connectors offers professional-grade reliability for all your electrical connection needs. Designed to work seamlessly with heat shrink connectors, it ensures rock-solid crimps every time, thanks to an efficient ratcheting mechanism and precision crimping die. Ideal for a wide range of wire sizes, from 20-10 AWG, this tool is perfect for both DIY enthusiasts and professionals working on electrical installations, marine applications, or automotive wiring. The precise ratchet structure allows you to secure the wire connector before crimping, ensuring perfect alignment. Simply squeeze the handle through the complete ratcheting cycle, and it will automatically release once the crimp is securely in place. This feature provides consistent crimps while reducing hand strain during extended use. Included with the tool are 210-pieces marine-grade heat shrink butt connectors made of tinned red copper. These connectors are designed for high performance, featuring a thick copper barrel that guarantees minimal voltage drop, optimal current flow, and reduced heat, which helps prevent short circuits. Comfort is prioritized with ergonomic nylon handles that offer a non-slip grip, making each crimping task swift and comfortable. Additionally, the tool is equipped with a quick-release lever inside the handle to easily open the jaws when necessary, ensuring ease of use and enhanced safety.