Descriptions:This 90 degree elbow adapter is made of high quality brass material, durable to use. Chrome plating of the surface treatment, bright and delicate. International standard G1/4 thread adapter, is the great joint collocation of computer water cooling system. Features:Made of high quality brass material, durable to use.Chrome plating of the surface treatment, bright and delicate.It is the great joint collocation of computer water cooling system.International standard G1/4 thread adapter.With silicone sealing ring, good sealing. Two adapters are optional, the out diameter of 9 mm is for inner diameter 7-8mm hose,the outer diameter of 11mm is for the inner diameter of 9.5-10mm hose.Specifications:Thread specification: G1/4, actual outer diameter is 12.9mm.Material: brassSurface treatment: chromium platingSeal: with silicone seal ringOuter diameter(optional): 9mm/0.35inch, 11mm/0.43inchThe outer diameter of 9mm is for inner diameter of 7-8mm hose.The outer diameter of 11mm for inner diameter of 9.5-10MM hoseWeight: 23g, 24gPackage Included:2 x 90 Degree Elbow AdapterNote:Due to surface plating process, it will exist color difference, if you mind, please not order!