Features: Upgrades your auto sound system with these strong brass reducers featuring nickel plating for best signal transfer for waterproof, strain resistant connections. precisions engineered with offset design for clutter free installations, these reducers ensure secure amplifier to battery terminal connections. Ideal for auto sound enthusiasts, professional installers, and DIYers seeking reliable power distribution in multiple amp setups or complex vehicle electrical systems. Perfect for upgrading amplifiers, organizing battery bank, or rewiring high performances sound systems while maintaining corrosion resistant, vibration proof connections in harsh automotive environments. Engineered with music lover grade materials, these terminal reducers minimize electric drop and electromagnetic interference for clear sound reproduction in auto sound amplifier wire configurations. Specifications: Material: Brass Size: 1.5x1.5x4.1cm/6x6x1.6inch Type: 4GA to 8GA/4GA to 4GA(optional) Package Includes: Pair Wire Terminal Reducers note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.