Features:_x000D_ 1. Made of high quality material, rust-resistant, solid and durable to use._x000D_ 2. The interface outer diameter is 9.5mm, the interface inner diameter is 6mm._x000D_ 3. Suitable for computer CPU water, industrial frequency inverter drive, laser head cooling, industrial control cabinet cooling._x000D_ 4. Easy to install and convenient to use._x000D_ 5. 100% brand new and high quality._x000D_ _x000D_ Specification:_x000D_ Condition: 100% Brand New_x000D_ Item Type: Water Cooling Block_x000D_ Material: Pure Aluminum_x000D_ Processing: Vacuum Aluminum Brazing_x000D_ Interface outer diameter: Approx. 9.5mm / 3.7in_x000D_ Interface inner diameter: Approx. 6mm / 2.4in_x000D_ Application: Suitable for computer CPU water, industrial inverter drive, laser head cooling, industrial control cabinet cooling_x000D_ Optional Size: _x000D_ #1: Approx. 30 * 30 * 12mm / 1.2 * 1.2 * 0.5in_x000D_ #2: Approx. 60 * 60 * 12mm / 2.4 * 2.4 * 0.5in_x000D_ #3: Approx. 80 * 80 * 15mm / 3.1 * 3.1 * 0.6in_x000D_ _x000D_ Package List:_x000D_ 1 * Water Cooling Block_x000D_ _x000D_ Note:_x000D_ 1. Please allow slight error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.