Product Advantages: First, our products have high power, which is 1200W. Other products on the market are 1000W. Our power is high, saving time and effort. Secondly, our products have novel appearance and have relevant certification patents, making them more reliable and safe to use. Finally, our products does not need overload protection. Other heaters need to cut off the power for cooling after heating for 10 minutes. Our heater can continuously heat for 40 minutes without powering off! Working Principle: The working principle of this screw heater is to use electromagnetic induction to heat metal bolts/nuts/screws that are easily magnetized within the working range of the coil, causing the bolts to expand when heated, so that they can be quickly removed. Heating quickly, no open flames will be produced during the heating process, you can use it with confidence! Aluminum Tool Box & 8 Coils: This handheld screw heater has 4 different sizes of coils, 2 of each size, including two manual DIY adjustable free coils to suit different work requirements. Paired with an aluminum tool box, it is sturdy, durable and easy to carry. Wide Application: This heat induction tool is mainly used to heat threaded nuts, rusty screws and screws to loosen them. It can also be used for heat treatment of automobiles, machinery and other small metal parts, such as gears, pulleys, bearings, etc. It is widely used and very convenient. Unique Design: This magnetic induction heater has a built-in cooling fan, which can prevent the heating device from overheating, protect heat-sensitive components, and extend the service life of the device; a built-in LED light at the end allows you to work smoothly in the dark; the granular anti-slip handle is ergonomic Learning design, more comfortable to hold. If you have any questions about the product, please feel free to contact us and we will do our best to solve it for you! › See more product details