1Wide Compatibility: These reducers can connect twin 1/0 gauge copper wire to 1/0 gauge amplifier inputs. They are suitable for most audio equipment interfaces, providing strong compatibility. 2Premium Material: Made with copper, these reducers offer excellent conductivity and abrasion resistance, ensuring the highest power transmission efficiency for clear, stable audio output. 3Safety Ensured: Features an eccentric pillar design that minimizes damage to the cables in the event of accidental bumps, protects your devices and cables and prolongs their lifespan. 4Easy to Use: The reducers require no special tools for installation, and the process can be completed within minutes, making them a convenient addition to your car audio system. 5Dual Pack: Pack includes two reducers, offering value for your cost. Having these in your car audio kit ensures you have a spare or a reducer for another vehicle or audio set up. 2 xCarAudioAmpInputReducer 1 x Screwdriver