Feature: Made of durable stainless steel and brass, provide stable and reliable performance. The needle handle and needle are not easy to separate. Good toughness and not easy to break With 0.2-1.0 apertures Brass nozzle and stamping wrench, can be replaced the nozzles at any time Easy to install, convenient to maintain the machines It is equipped with a stamping wrench with an opening of 21mm. When replacing the nozzle, the heating block can be fixed for easy disassembly. .