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! ⭐This is a good helper in your life and makes your life more convenient ⭐Use simple small objects to greatly improve the quality of life ⭐Fashionable appearance, durable products, good quality, more happy home life ⭐Please read the item description carefully to understand the size of the product and the content of the package ⭐The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness