Induction Heating Coil Kit Used to remove rusty bolts and nuts easily and efficiently The diameter of the copper coil is 30mm,which can resist high temperature upto 1200. It is durable enough to be used at least hundreds of times These coils are insulated and coated for protection and anti abrasion Our induction coils are all flexible and you can bend them to meet your needs Material: Copper Color as shown 10 pcs Induction Coil Long Lasting Good Insulation High Flexibility Efficient Specifications: Item: 10 pcs Induction coil 2 x 079 inch (20 mm) 2 x 098 inch (25 mm) 2 x 118 inch (30 mm) 1 x 138 inch (35 mm) 1 x 157 inch (40 mm) 2x Free forming coil 295 inch (750 mm) 1x Plastic Case Package Contents: 10 x Induction Heater Coil Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.