specification:Item Type: Oxygen Sensor Extender_x000D_Material: Steel_x000D_Size: M18 x 1.5_x000D_Application: Universal for any thread size is 18mm Features: 1Steel Construction: Oxygen sensor extender is made of double galvanized steel, fine workmanship, high hardness, not easy to rust and deformation. 2Function: The O2 sensor extender can improve the problem that the installation position of the oxygen sensor is too low and protect it from being damaged by collision. 3Characteristic: Oxygen sensor spacer extension, M18x1.5 size, L shape and can be retractable, strong reliability, making sure safety use. 4Excellent Replacement: 90 oxygen sensor extender is simple to operate, without modification. Perfect to replace old or broken O2 sensor spacer. 5Long Use Time: Exquisite and careful workmanship, the O2 spacer can be used for a long time, professional installation is highly recommended. PackageList:1 x Oxygen Sensor Extender