●?---- Size: 3/16" Dia (5mm), Length: 11.81" (300mm), 1Pcs ●?---- Material: 99.9% Pure copper. 110 copper has a metallic luster and excellent electrical conductivity and thermal conductivity. ●?---- Excellent Conductivity: 99.9% copper 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 copper rod by yourself to choose the desired length. ●【Multiple Sizes】: You can choose diversiform sizes of copper rod. (Dia:3~25mm, Length:100~250mm).