Insulated Crimp Connectors: Different colors correspond to different sizes in electrical wire connectors, 0.5-1.5 mm²/AWG 22-16 (Red), 1.5-2.5 mm²/AWG 16-14 (Blue), 2.5-6.0 mm²/AWG 12-10 (Yellow). Easy to Crimp: Strip the wire and place the crimp connectors in the crimping pliers, then crimp the end sleeve to secure the wire. Leia Mais