fill gas use gas filling, and make sure that the switch is OFF, and then supplement. the gas tank into the inlet hole, pressure inflation. about 10 seconds, can complete the filling of gas, wait a few minutes, until the gas is stable, then use. If there is a hissing air sound at the tail after the gas is injected, the pen tip slightly into the air port to it. ignition:1. Replace the soldering iron head, 2, open the door to the place ON, hear the "hissing" sound. 3, push the electronic switch can be ignited. 4. Burn for 3 minutes after ignition, until the fire is extinguished, the soldering iron head continue to heat. 5, adjust the flame size; 6. The temperature of this product is as high as 1300 degrees (soldering iron temperature 450 degrees), pay attention to safety when using, and turn OFF the switch to the OFF position after use. 7, when using a gas soldering iron, please pay special attention to wait until the flame is completely eliminated and the objects in the iron become red, then operate to extend the life of the iron head Precautions: 1, replace the joint, please wait for cooling to replace or change in advance. 2, the use of soldering iron head, high temperature and hot, do not touch with hands. 3, the adjustment button can control the gas output volume and temperature, usually placed in the middle position. 4, after use to cool, then collection, do not place in high temperature or direct sunlight. 5, children should not use, collection needs to be placed in a proper place. Color: As shown Material: Metal Package Contents: 1set x Portable small gas soldering iron head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.