100% brand new and high qualityFeatures:It is a CNC machined weld on 02 Sensor Bung that are designed for adding a 02 Sensor in any place you need one . Great for Custom Exhaust , Headers , Down Pipes or for Adding a extra 02 Sensor for use with a Wideband. The thread is Standard 18mm which will fit Most OEM And Aftermarket Sensors.The Bung Plug has a 22mm socket head for easily removal.Application:Universal For any thread size is 18MMSpecification:Color: SilverMaterial: IronSize:As picture showsNote: 1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes(without retail package):1 set x O2 Oxygen Sensor