ITEM NAME:Acrylic G1/4inch Square Shape Computer Water Cooling Flow Meter 2Ways Description: - Name: Water-cooled flow meter - Thread size: G1/4, The actual outer diameter size is 12.9MM - Material: Acrylic - Surface treatment: Polishing - Role: Observe the flow of water, etc. Package Included: 1x Water Cooling Flow Meter.Material: Acrylic. - Role: Observe the flow of water, etc.