Features 1、Made of premium brass material, it is corrosion resistant and durable. 2、Chemical pipe fittings used for connecting two different pipe diameters. 3、With good toughness and plasticity, good welding. 4、A total of 2pcs for convenient replacement of the broken one. 5、A great assistance for pipe maintenance. Specification Features: Made of premium brass material, it is corrosion resistant and durable. Chemical pipe fittings used for connecting two different pipe diameters. With good toughness and plasticity, good welding. A total of 2pcs for convenient replacement of the broken one. A great assistance for pipe maintenance. Specification: Material: Brass Weight: 37g/1.3oz Size: 4--8mm (out diameter of the dual head) Package List: 2* Barb Connector Package List