ITEM NAME:M18X1.5 Stainless Steel O2 Oxygen Sensor Extender Extension Spacer Bung A#S Product Description Description: Universal M18X1.5 Stainless Steel O2 Oxygen Sensor Extender Extension Spacer Bung Features: Dustproof and waterproof; Easy to install and easy to use; Specifications: Gross weight: 46 g Size: 32 x 25 mm/1.26 x 0.98" Material: stainless steel Applicable models: universal Included: 1 X O2 Sensor Extender.Included: 1 X O2 Sensor Extender. Material: stainless steel. Gross weight: 46 g. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.