DO (mm): 3.0 Internal diameter (mm): 1.6. Suitable for: FR-301 HAKKO Corporation is the world-renowned company for welding products with proven solutions that are more than just what was expected. For over 60 years, Hakko has been producing high-quality soldering and desoldering tools, hot air systems, smoke and smoke dissipation systems, technical training and a wide range of accessories. Developed to meet the demands of ever increasing welding requirements, HAKKO is required for its employees and its products. The petrol of the Hakko cultivation helps to connect valuable components with the welds. With more than half a century of experience in soldering technology, HAKKO Corporation is able to meet the needs of its customers, exceed their expectations and provide the best welding for all types of parts and products in different environments. Innovation, creativity, sense and equestrian content can easily take us from product design to complete marketing in the sale without affecting the requirements of each customer. When it comes to welding technology, ask for HAKKO. HAKKO Product Group: Automatic Soldering Tin, Soldering Iron, Potty, Welding Bath, Material & Materials for Welding, Desoldering / Rework, Smoke Extraction, Static Control, Tester/Meter, Sealing/Hot Air Gun, Hobby