Filter Filters 1/0 Gauge,4 Gauge Wire Reducer Remove All Filters Price Under $50 (2) Condition New (2) Brand Harmony Audio (1) Stinger (1) Harmony Audio HA-WR04 Car Stereo Power or Ground 1/0 to 4 Gauge Wire Reducer... $6.95 Stinger SPT521 1/0 Gauge to 4 Gauge Power Wire Reducer $12.95