Features [SPECIFICATIONS]: Includes 2pcs 20mm coils, 2pcs 30mm coils, 2pcs 40mm coils, 2pcs 750mm free coils, a 50mm coil, and a circular pie coil, multiple models to meet more needs. [2.5MM BRASS CORE]: These induction coils use 2.5mm brass core wire, can be heated to a high temperature of 1200℃, resist overheating and wear, reliable and durable. [GOOD FLEXIBILITY]: These induction heater coils have good flexibility, which can be bent to adapt to various usage situations, making them easy to operate and replace. [INSULATION COATING]: These brass core induction coils have insulation and wear resistant coating, electroplating process avoids oxidation, improving work efficiency. [WIDE APPLICATION]: The induction heater coil kit is mainly used to heat rusty nuts and screws to loosen them, suitable for heat processing of gears, pulleys, and bearings. Features: 1.Includes 2pcs 20mm coils, 2pcs 30mm coils, 2pcs 40mm coils, 2pcs 750mm free coils, a 50mm coil, and a circular pie coil, multiple models to meet more needs. 2.These induction coils use 2.5mm brass core wire, can be heated to a high temperature of 1200℃, resist overheating and wear, reliable and durable. 3.These induction heater coils have good flexibility, which can be bent to adapt to various usage situations, making them easy to operate and replace. 4.These brass core induction coils have insulation and wear resistant coating, electroplating process avoids oxidation, improving work efficiency. 5.The induction heater coil kit is mainly used to heat rusty nuts and screws to loosen them, suitable for heat processing of gears, pulleys, and bearings. Specification: Item Type: Induction Heater Coil Product Specification: 10Pcs 2.5mm Brass Core Coil Combination (20 Type, 30 Type, 40 Type, Free Type Coil Each 2pcs, 50 Type, Flat Type Coil Each 1Pc) Material: Brass Brass Core: 2.5mm Application: Used to remove rusty bolts and nuts Package List: 10 x Induction Coils 1 x Storage Box Package List 10 x Induction Coils 1 x Storage Box