2390511-1 is part of the SDE Crimp commercial tool system designed for versatile crimping operations. This tool features interchangeable Standard Die Envelope (SDE) die sets that can be used with both manual and power-assisted tools, minimizing the need for multiple hand tools. The enhanced tool frame incorporates bi-material grips for improved control and ergonomics during repetitive crimping, along with a rounded upper jaw design engineered for increased strength and even force distribution. A ratchet action frame prevents under-crimping by not releasing the terminal until the crimp cycle is complete. Common applications include wire termination and connector assembly where reliable, high-quality crimps are essential.