What you get: One set of four replacement nozzles — Standard, Round, Triangular and Positioned — to cover a range of welding tasks. Why you need it: Different nozzle shapes control heat and airflow. Having four options lets you match nozzle geometry to the joint, material and access, so you get cleaner, faster, and more consistent welds without repeatedly adjusting technique. Key benefits Versatile: Four nozzle profiles cover general-purpose work (Standard), focused airflow (Round), edge or slot work (Triangular), and a fixed-direction option (Positioned) for awkward angles. Reliable under heat: Made from robust, high-temperature-resistant materials to withstand repeated use and minimize deformation. Leak prevention: Precision fit and durable construction reduce leaks, maintaining consistent airflow and stable welding performance. Easy compatibility: Designed specifically for use with air diaphragm pumps and interchangeable with common shop and home tools that accept these nozzles. Consistent performance: Durable materials and accurate shapes preserve nozzle geometry over time so weld quality remains repeatable. Practical details Function: Directs and shapes airflow to control heating and shielding at the weld point. Compatibility: Intended for air diaphragm pump systems; adapts to a range of workshop and home welding tools. Durability: Built to resist high temperatures and prevent leaks during typical welding cycles. Typical applications Automotive bodywork: Use the Round or Triangular nozzles to concentrate heat on seams and panel edges for faster, cleaner joins. Workshop repairs and fabrication: Switch between Standard and Positioned nozzles to access tight joints and maintain steady airflow on small assemblies. Home projects and maintenance: Replace worn nozzles quickly for consistent results on occasional welding or heating tasks. Simple to swap and built for repeated use, this four-nozzle set provides practical options for improving control, reducing rework, and extending the useful life of your air-diaphragm-pump welding setup.