1. These gaskets contain a small stainless steel filter that eliminates CELs that are less efficient than catalysts. 2. Suitable for any model equipped with a standard O2 sensor. 3. Universal, suitable for all M18X1.50 specification vehicles. 4. Fine workmanship. 5. Easy to use. . Colour:As Shown Material:Stainless steel Package Contents: 1 x Automotive Sensors set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.