●?---- Size: 3/16" OD - 5/32" ID (5-4mm), Length: 11.8" (300mm), Wall Thickness: 0.02"(0.5mm), 2PCS ●?---- Material: Brass 280 (H62 brass). The content of brass is 62%. ●?---- Excellent conductivity: Brass has good strong heat transfer capability and electrical conductivity. In addition, it isn’t affected by corrosion, temperature and pressure. ●?---- DIY Decoration: You can cut the brass tube by yourself to choose the desired length. ●?---- Multiple sizes: You can choose diversiform sizes of brass tubings. (OD:1/8” ~3/8”, Length:300mm).If you have any requirements, please send us Amazon Message.