Tube expander 1. Specially designed arm profile for high strength 2. Ergonomically designed non slip handles 3. Longer pine guide, with integrated retraction mechanism 4. Quick change expander heads 5. Easy expanding even in restricted spaces 6. Up to 5% reduction in installation time and costs 7. Manufactured to the highest technical standards to ensure top quality joints 8. Please make sure to anneal the fittings before expanding.