Amazon.com: Conext Link GAD04 1/0 Gauge to 4 Gauge Wire Reducer 2 Pack (16700) : Industrial & Scientific
Amazon.com: 25 pcs 4 Gauge 4 AWG x 5/16” Pure Copper Cable Lug Terminal Ring Connectors with Dual Wall Adhesive Lined Red + Black Heat Shrink Tubing – by WNI : Industrial & Scientific