100% brand new and high qualityThe external diameter of the connector is 8mmThe inner diameter of the connector is 6mmInternal flow channel extrusion formingBrazing parts into a wholeLeak rate of less than 5X10-6 mbar.l/s partsInternal fin thickness 0.5mmApplicable to computer CPU water， industrial inverter driver， laser head cooling， industrial control cabinet coolingSize: 41 x 41 x 12mm / 1.57" x 1.57" x 0.47"Spacing: 1mmProcessing: vacuum aluminum brazingSurface treatment: Blue oxidation