0 Gauge Terminals, 0 Gauge Wire Connector 0 Gauge to 4 Gauge Reducer, 4 PCS Heat Shrink Tubes 4 PCS Connectors 4 PCS Extra Srews,1 PCS Hexagon Tool, Car Audio Battery Amp Wire Connectors 0 Gauge Terminals Great Amp Add-On Got To Have: Whenever you add an amp to your vehicles,0 Gauge to 4 Gauge Reducer will makes it easier to connect amp wires. A must have! 0 Gauge Wire Connector Easy To Use Fit Perfectly: The pins work well for amplifier power connections, Just grind down a flat spot on the insert for the screw to securely press down on, Comes with heat shrink to cover them so you don't have a short. 0 Gauge to 4 Gauge Reducer Made of High Quality & Durable Material: Brass with Nickel Plated, 2 Gold and 2 Silver would be better than 4 Silver, Great for installing an amplifier! Amp Wire Connectors Car Audio Battery: 4 Gauge Terminals, Amp Wire Connectors, Amp Input Reducer Adapter The wire reducer great for amp connects,multi-battery terminal,car audio music system,multiple amplifier,etc. Package include: 4 PCS Connectors, 4 PCS Extra Srews, 4 PCS Heat Shrink Tubes , 1 PCS Hexagon Tool.