The 1-966066-9 is an insulated wire end ferrule designed for terminating 0.75 mm² (18 AWG) stranded and flexible wires with a white plastic sleeve for circuit identification. It features a copper sleeve with an outer diameter (d2) of 2.80 mm and inner diameter (d1) of 1.20 mm, with a total length (L1) of 12 mm and insulation length (L2) of 6 mm. The ferrule provides a clean, reliable connection point for wire insertion into terminal clamps, push-in connections, and spring connection technologies used in industrial control devices and terminal blocks. It is supplied in packages of 500 units and is compatible with side entry hand tool 539660-1 and front entry hand tool 6:1579014-5, ensuring precise and gas-tight crimped connections for applications requiring contact precision and conductor protection.