Ideal 30-454 Wire Connector, Wing Nut, Model 454 Blue, Voltage Rating: 600V General, 1000V Sign/Luminaires, Wire Range: 14-6 AWG, See Spec Page for Combinations, Wire Nut,25/Box - ME Campbell Co
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3M Performance Plus 2-Wire Connectors - Blue/Grey
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IDEAL 72B Blue WIRE-NUT Wire Connectors (100-Pack) 30-172P - The Home Depot
IDEAL 454 Blue Wing-Nut Wire Connectors (25-Pack) 30-454P - The Home Depot
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3M Performance Plus 2-Wire Connectors - Orange/Blue