JacobsParts 2/0 AWG Insulated Ring Terminal 00 Gauge, 5/16" US Custom Stud Size, Red and Black Boots for Car Audio Amp/High Current Power Cable/Ground Wire: Amazon.com: Industrial & Scientific
ASI 14 - 2 AWG Inline Splice Multi Tap Connector, Insulated, Black AICD2-1 - The Home Depot