ITEM NAME:4 Pieces Oxygen O2 Sensor Spacer Extender M18x1.5mm Bung 90 Degree Angle Kit Description: - Super good 304 Stainless Steel material. - Durable, never fade. - Withstands high exhaust temperature. - easy-to-screw threads or can also be welded. - Perfect to replace old or broken nut. Specification: - Material: 304 Stainless Steel - Thread: M18*1.5mm Package Included: 4 Piece O2 Oxygen Sensor Nuts Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.4 Piece O2 Oxygen Sensor Nuts. - Thread: M18 1.5mm. - Withstands high exhaust temperature. Due to the difference between different monitors, the picture may not reflect the actual color of the item.