ISO9001 quality certificate acquired. CE product identification Square section 4*4,3.5*3.5 o, 3*3 and dimension of 4.2*2.2,4*2,the surface is bright ,arld with thermocouple of type K or J ,the length of wires is 1000MM,the outer peoteceting tube is stainledd steel sheath shield or silicone tube .Voltage:220V,230V,240Vpower:220W-320W. tip shaped single ended heater