Copper Connector. 3:1 Shrink Ratio. Yellow: 2.7mm ²-6.0mm ² Cable 12-10 AWG. Red: 0.25mm ²-1.5mm ² Cable 22-16 AWG. Blue: 1.1mm ²-2.5mm ² Cable 16-14 AWG. No fitting instructions are provided with the product.
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