Upgrated Magnetic Induction Heater Kit,Induction Heater Bolt Removal,1100W 110V Hand Held Induction Bolt Removal Tool For Rusty Screw Removing with 8 Coils and Box, Foldable body 　 　 　 Induction Heater Bolt Removal Induction bolt heater kit mainly used for heating threaded nuts and rusty screws to loosen them.The heat induction tool can also be used for automobiles, machinery, and various small Heat treatment of metal parts such as gears, pulleys, pulley, bearings, etc.