4 Way Power Distribution Block 0GA in to 4GA Out for Car Audio Amp Stereo Amplifier Specification: Material: zinc alloy Input hole: 1 x 0GA Output hole: 4 x 4GA Base fixing screw hole: 5mm Input diameter: 13mm Outout diameter: 9.5mm Set screw size: M8*10mm Installation location: car audio wiring Installation instruction: Distribute the power cords of multiple car amps. Commonly used for positive, negative, and ACC control wiring. M8 (4mm) wrench (not included) wrench is required for tightening female screws at the connection point. Note: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. 1 X Power Distribution Block