ITEM NAME:Universal O2 Oxygen Sensor Bung Stainless Steel Adapter Extension Extender #gib Store Home Promotion Hot Item Add to Fav.1 x Oxygen Sensor Bung. Made of stainless steel, it is highly resistant to corrosion and oxidation. Material: stainless steel. Applicable models: universal. Product size: 50 x 16.6 mm/1.97 x 0.65". If item is defective after 3 months, you can still send it back to us.