This is a kind of 3mm grade heating wire, 12K 33 heating conductor, insulating material, the maximum acceptable temperature is up to 200. Far infrared radiation without electromagnetic radiation, no harm to human body. High strength, anti-aging, oil resistance, acid-base resistance, high temperature resistance. You can have a try. Features: 3mm 12K 33 heating conductor, insulating material, the maximum acceptable temperature is up to 200. With high thermal conversion rate and energy-saving effect. Easy installation and easy maintenance. High strength, anti-aging, oil resistance, acid-base resistance, resistance at high temperature. Far infrared radiation without electromagnetic radiation, no harm to human body. Low cost, economical and environmentally friendly. Suitable for underfloor heating, insulation boards, blankets electric heaters, thermostats and other products. Features: Name: Heating Wire Material: Silicone Rubber Length: 10m, 20m, 30m, 50m, 100m (optional) Acceptable temperature: 200 Heated conductor: 12K Maximum allowable power: 25W/M Infrared Wavelengths: 8-18m Conductor Resistance: 3310%/M Diameter: 30.1mm Item Size: 10m: 165*110*20mm/6.50*4.33*0.79in 20m: 150*90*45mm/5.91*3.54*1.77in 30m: 170*110*45mm/6.69*4.33*1.77in 50m: 220*150*35mm/8.66*5.91*1.38in 100m: 245*160*50 mm / 9.65 * 6.30 * 1.97 inch Package size: 10 m : 170 * 120 * 50 mm / 6.69 * 4.72 * 1.97 inch 20m: 170*120*50mm/6.69*8.66*1.97in 30m: 195*140*50mm/7.68*5.51*1.97in 50m: 240*170*50mm/9.45*6.69*1.97in 100m: 280*250*50mm/11.02*9.84*1.97in Weight of the Package: 10m: 90g/0.20lb 20m: 178g/0.39lb 30m: 272g/0.60lb 50m: 433g/0.95lb 100m: 860g / 1.90lb Packing list (10m/20m/30m/50m/100m optional): 1 * heating wire