BS-850 Refillable butane gas chef cooking culinary kitchen blow torch lighter. Dimensions: 12.4X7.5X20cm. Air capacity: 20g. The head adjusts the flame size. Plastic case. Double musket nozzle, straight into the blue flame, windproof torch, strong vitality. The nozzle can withstand high temperatures, extending the life of the torch. Safety lock prevents accidental ignition. The cooking torch adopts professional piezoelectric ignition technology, which makes the operation of the torch safer. Kitchen cooking torch can be refilled when used up, adjustable flame intensity temperature up to 1300°. For every need like grilling, crème brûlée, baking, soldering DIY jewelry and more. To fill gas tank. Turn unit upside down and firmly push the butane can into the filling valve. The tank should be filled in 10 seconds. Please allow a few minutes after filling for the gas to stabilize. To ignite the torch. Firstly, turn the gas adjustment knob in counter-clockwise. Secondly, press the ignition button and keep burning. To shut off the torch. Then turn the gas flow control knob in clockwise direction when not use. Adjustment of flame: you may increase gas flow and flame length by turning the gas flow control knob in counter-clockwise direction. It is recommended to use high-quality butane gas. When inflating, if there is air leakage at the air inlet, it means that the gas cylinder is full. After refueling, wait a few minutes for the gas to stabilize before operating. It is recommended to perform each inflation every 3-5 seconds. Before storing, please confirm that the product has no open flame and has been cooled. Do not touch the nozzle during use or just after use to avoid burns. Do not disassemble or repair by yourself. Please use it in a ventilated environment.