A set of wheel nut coils using the latest flameless heat induction technology for removing seized or over tightened wheel nuts Sizes of Wheel Nuts: 17, 19, 21mm. For use with the Laser Heat Inductor Part Nos: 5834 and 5835. Specially designed coils for use on seized wheel nuts. Special length coils for use in tight areas. Extra thin for narrow access on alloys. Made in Great Britain.