High quality pattern aluminum and good resistance to corrosion, processed by colorful oxidizing, used in conversion from coaxial cable to each other, mainly in transmission of CATV trunk to branch networks. Free coring tools ensure quick connection and installation, the product is used in aluminum pipe and vertical wrapped cable, its inner and outer conductors are locked tightly by double threads. The port size of this product: M10x0.75, hole diameter 1.2mm. It is connected with 412 aluminum pipe and vertical wrapped cable.