1、Professional water hydrogen flame prevention and tempering safety devices, safe and effective use. 2、Precious metal jewelry necklace welding, enameled wire lead welding, laboratory hydrogen oxygen flame. 3、High temperature, fine fire, carbon ‑ free, environmental ‑ friendly hydrogen ‑ oxygen flame. 4、Thread compression designs, reliable withstand pressure, not off the pipe. 5、Made of quality metal and brass material, durable and sturdy, long service time. 1 x Jewelry Welding Torch1 x Accessory  Condition: 100% Brand NewItem Type: Jewelry Welding TorchMaterial: Metal + Brass Installation method: suitable for chemical-resistant soft hose, generally connected to the hose behind the welding torch, 1.5-2MM away from the tool air outlet, and 0.3-1M away from the welding torch.Precautions for use:The nozzle of the soldering torch must be tightened to prevent air leakage.