High Quality: The 1/0 gauge to 4 gauge wire reducer are made of premium aluminum, durable and lightweight.Proper Size: The car audio power or ground input reducer adapter terminal connector is with size 4.15cmx2.15cm/1.63inchx0.85inch.Easy Install: The amp car audio amplifier power and ground 1/0 gauge to 4 gauge input reducer is simple install.Wide Applications: The wire reducer are widely suitable for car audio system, amp connects, multiple amplifier, etc.Package Includes: 2 car audio amp input reducer adapter.Specification:Material: AluminumSize Chart:4.15cmx2.15cm/1.63inchx0.85inchPackage Includes:2 Car Audio Amp Input Reducer AdapterNote:Please allow slightly errors due to manual measurement and different monitors.