Descriptions: This adapter adopts of high quality metal material, durable for using. It is suitable for computer water cooling system. Convenient to use, easy to install. Features: Made of high quality metal, durable for using. Compact size, easy installation. International standard G1/4 thread adapter. Suitable for computer water cooling system. 4pcs connectors are enough for using. Specification: Thread: G1/4(the actual outer diameter is 12.9mm) Material: Brass Surface treatment: electroplating Seal: with silicone sealing ring Color: Black, Silver(Optional) Diameter: Approx. 18mm / 0.7in Weight: 30g Quantity: 4pcs Package Include: 4 x Adapter for Computer Water Cooling System1Made of high quality metal, durable for using. 2Compact size, easy installation. 3International standard G1/4 thread adapter. 4Suitable for computer water cooling system. 54pcs connectors are enough for using.