Reddit reviews Sound Quest 4 to 8 Gauge Power or Ground Pro Style Wire Reducer

Satin silver finishConverts 4 gauge wire to an 8 gauge pinCan be used with some amplifiers as direct inputs (I.E. amplifier accepts 8 gauge power wire, but you want to use 4 gauge. Depending on how close the power and ground inputs are together, you might be able to use this piece to convert from 4 gauge to 8 gauge. The key is that there is enough distance between the power and ground connections that when using these terminals, they do not touch)Allen head set screwVery heavy duty - Can be used for audio, marine and any under hood wiring