Features Versatile Coil Kit Options: Includes 20mm, 30mm, 40mm, and 50mm coils, plus a 750mm forming coil, catering to diverse heating needs for various projects High-Temperature Brass Core: Made with 2.5mm brass wire, these coils withstand temperatures up to 1200℃, offering flexibility for a wide range of applications and Long Lasting: Designed to resist overheating and wear, each coil features insulation and an abrasion-resistant coating, ensuring longevity and optimal performance Features: 1、[Versatile Coil Kit] This kit includes 20mm (dia0.79in), 30mm (dia1.18in), 40mm (dia1.57in), 50mm (dia1.97in) coils, a 750mm (29.53in) long forming coil and a flat type coil, can meet various working needs. 2、[2.5mm Brass Core] Constructed with 2.5mm brass wire, these induction heater coils can withstand high temperatures up to 1200℃. They are flexible and can be bent for versatile applications. 3、[Long Lasting] Each coil is designed to resist overheating and premature wear. They are insulated and coated with a abrasion resistant layer, as well as electroplated to prevent oxidation and ensure optimal . 4、[Wide Applications] Induction heater coils are mainly used for heating nuts and ed screws to loosen them, also suitable for automotive, machinery, heat treatment of various small metal parts. 5、[Convenient Storage] This coil kit comes with a portable box for easy storage and portability. You can carry it with you while working and keep your work space organized and tidy. Specification: Item Type: Induction Heater Coil Kit Material: Brass Specification: 6 piece set of 2.5mm brass core coil combination (1 coil each for 20, 30, 40, 50 type, type, flat type) Brass Core: 2.5mm Application: Used for dismantling y bolts and nuts Package List: 6 x Induction Heater Coil 1 x Storage Box Package List 6 x Induction Heater Coil 1 x Storage Box