Electromagnetic Induction Heating Coil Heater Hot Coil Copper Coil High Frequency Heating Coil Features: The induction coil kit includes seven of the most commonly used prefabricated diameter coils and one free coil, suitable for a wide range of applications. Includes: 1 x 18mm (internal diameter), 1 x 22mm (internal diameter), 1 x 28mm (internal diameter). The length of the free-formed coil is 100cm. Each coil resists overheating and premature wear, designed for durability and repeated use. These induction coils are flexible and can be bent to meet various requirements. The induction coil kits are electroplated to prevent oxidation and ensure reliable contact, providing efficient performance. Coils are insulated for safety and coated to resist wear. Replace coils if insulation is damaged. Parameters: Material: Copper Size: - 100cm (free coil) - 21x3cm, inner diameter: 1.8cm (diameter coil) - 21x3.5cm, inner diameter: 2.2cm (diameter coil) - 21x4cm, inner diameter: 2.8cm (diameter coil) Package Includes: 4 x Heating Coils