parameter: Product name: carbon fiber heating wire Insulation material: Silicone rubber The highest temperature tolerance: 200C degrees Heating temperature: depending on the length of use Heating element: 12K Leakage current: 0.05mA/m The product can withstand the maximum power: 25W/M Diameter: 3±0.1MM (thicker and safer) color: red Infrared wavelength: 8UM-18UM Conductor resistance: 33±10%/m The package includes: Buy 100m cable=100m+20 copper pipe+20 casing Buy a 50m cable=50m+10 copper pipes+10 bushings Buy a 30m cable=30m+6 copper pipes+6 bushings Buy a 20m cable=20m+4 copper pipes+4 bushings Buy a 15m cable=15m+4 copper pipes+4 bushings Buy a 10m cable=10m+2 copper pipes+2 bushings How to calculate power? Voltage*Voltage☼Resistance=Power 12K = 33 ohm/meter For example, using a 10m 12K carbon fiber cable on 220V, the power is: 220V*220V*10m*33=150W For example, using 15m 12K carbon fiber cable on 220V, the power is: 220V*220V*15m*33=100W The longer the length, the lower the power and the lower the heating temperature. notes: 1. Due to manual measurement, please allow an error of 1-3mm. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Our products are made of environmentally friendly materials, safe and non-toxic, and will not cause harm to the human body. Please read the product manual carefully before purchasing, and use it correctly according to the operation steps. If you encounter any difficulties or problems during use, please contact us in time, we will solve them for you as soon as possible. Your support is the driving force for us to move forward, and we look forward to sharing your experience and experiences with us. For the quality problems or defects of the product itself, we will provide unconditional return or repair service.