Features: This oxygen sensory thread chaser set (18x1.5mm & 12x1.25mm) features carbon steel construction for efficient thread repair and oxygen sensory socket. Ensuring smooth debris removal while reducing threading risks, with 3/8inch drive compatibility for universal wrench integration. Ideal for automotive technicians and enthusiasts maintaining vehicles with damaged oxygen sensory thread or corroded installation. Perfect for garage repairs, effectively restores thread in confined engine compartments and aligns mismatched oxygen sensory socket connection. 41mm design combines industrial durability with lightweight portability ensuring workshop overhauls. Specifications: Component:Carbon steel Size: Approx.41x19mm/1.61x0.74inch Package Includes: 2Pcs Oxygen sensory Thread Chaser note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.