Kicker Complete 4 Gauge D-Series 2-Channel Amplifier Installation Kit 4 Gauge D-Series Power Amplifier Installation Kit Premium power and ground wire provides optimal power transfer Hyper-flex cable and wire Complete kits with Direct-Connection installation components, tansfer the highest current possible with the fewest connections, giving you a ultra-clean and super reliable system Included are Power Cable, Ground Cable, Fuse Holder, System Fuses and 2-channel RCAs