Hign-concerned Chemical:NoneType:Non Heating TypeRepeatability:-Hysteresis:-Linear:-Measuring Range:-Sensitivity:-Sensor Type:Magnetic InductionOrigin:Mainland ChinaResolution:-OEM NO.:-Features: This is a built-in micro-catalytic converter, which helps eliminate the possibility of removing the catalytic converter Sometimes even when installing high-flow catalytic converter, the engine emits annoying inspection light. Specifications: Material:Non-woven fabric Size: As Picture Color:As Picture Package Includes: 1Pc X Filter (Catalytic Converter not included) Note: Please allow 1-3cm differences due to manual measurement. Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you! No Retail Box,Packing Safely in Bubble Bag.