Material: The welding gun tail is made of a combination of copper and plastic, which ensures the conductivity and mechanical strength of the product, while the plastic part provides good insulation performance. Strong Compatibility: This tig welding back cap is designed for WP-17/18/26 series welding guns, with good adaptability, and can quickly replace the original tail. Safe Insulation: The design of the plastic part ensures safe insulation during use and reduces the risk of electric shock. High Temperature Endurance: The copper material part can withstand the high temperature generated during welding and maintain stable performance. Easy Maintenance: The combination of copper and plastic makes the tail parts easy to clean and maintain, extending the service life of the welding gun., Weight: 0.220462262 Pounds, Manufacturer: Fafeicy