Insulation Material: HDPE Terminal Material: Brass Temperature Rating: 150°C max. Wire Range: Red – 22-16 A.W.G / 0.5 – 1.5mm² Blue – 16-14 A.W.G/ 1.5 – 2.5mm² Yellow – 12-10 A.W.G / 4.0 – 6.0mm²