ModTek Silence: Advanced Cooling System Pump XSPC G1/4" to 3/8" Barb Fitting (Chrome) Newly developed: Silent running technology Noise: 26 decibels Two XSPC G1/4" to 3/8" Barb Fitting (Chrome) Pump impeller & motor are tuned tuned for silent and high performance Flow Rate: 6 liters a minute