WAGO's 216-302 ferrule sleeve is a crucial accessory for terminal block applications, particularly when working with 0.34 mm² insulated electrolytic copper wires. The ferrule ensures a gas-tight and electrically conductive connection, preventing corrosion and maintaining signal integrity. Its compact dimensions (L 12.5 mm, L1 8 mm, D 2.5 mm, D1 2 mm, D2 0.8 mm) and lightweight design (0.06 g) make it suitable for a wide range of industrial applications, including automation, control systems, and power distribution. The green color provides visual identification and organization within complex wiring systems. WAGO ferrules contribute to the overall reliability and longevity of electrical installations.