ITEM NAME:O2 Oxygen Spacer Sensor Extension Dual Fit 90 Degrees 02 M18x1.5 18mm X 1.5 Description: 90 degree O2 sensor bungs mini catalytic converter was made of 201 Stainless Steel. M18X1.5 catalytic converter built inside and will help get rid of that. Real Mini Catalytic Converter inside. 90 Degree bend design is great for spacer clearance issue. NOTE:Not For Street,On Road or On Highway vehicles, Only Sold For Non-Road Vehicles Used,Racing, Modified Exhaust Testing An Tuning Diagnostics ONLY. Specification: Material: stainless steel Size Chart: Sizeï ¼Å¡7x6x3cm Package Includes: 1X 1X connector Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test. Thank you for your understanding and finding this item. Enjoy your shopping timeï ¼ SKU: DMO0021886252028927.M18X1.5 catalytic converter built inside and will help get rid of that. 90 degree O2 sensor bungs mini catalytic converter was made of 201 Stainless Steel. 90 Degree bend design is great for spacer clearance issue.