Bitspower G1/4" Air Exhaust Fitting, Black Sparkle Go to amazon.com Related posts Top 10 g1/4 exhaust for 2022 FeatureSystem Air Exhaust DesignG1/4" threadHi-Quality Brass MaterialHidden O-ring DesignColor: Black Sparkle DescriptionBitspower push-button air exhaust helps equalize air pressure in water-cooling systems. Model: BP-BSETAIR.