The WAGO 216-221 ferrule is a vital accessory for WAGO terminal blocks, designed to provide a gas-tight and mechanically reliable connection for wires. Specifically engineered for 0.5 mm² / 20 AWG conductors, this ferrule ensures a secure and dependable electrical connection. The electro-tin plating enhances conductivity and corrosion resistance, while the white color provides visual identification. It's ideal for applications requiring robust and reliable wire terminations in industrial control panels, automation systems, and power distribution networks.