Modtek Silence: Advanced Cooling System Pump, with XSPC Fittings (G1/4" to 1/2" ID, 3/4" OD Compression Fitting, Black Chrome) Newly developed: Silent running technology Noise: 26 decibels Two G1/4" to 1/2" ID, 3/4" OD Compression Fitting (Black Chrome) V2 Pump impeller & motor are tuned tuned for silent and high performance Flow Rate: 6 liters a minute