O2 Sensor Socket Set: The package includes 1PC 1/2" Dr. x 7/8" (22mm) offset oxygen sensor socket, 1PC 3/8" Dr. x 7/8" (22mm) offset oxygen sensor socket, 1PC 3/8" Dr. x 7/8" (22mm) long oxygen sensor socket, 1PC M12 x 1.25mm thread chaser and 1PC M18 x 1.5mm thread chaser | Premium Material: The oxygen sensor remover set is made of high-quality alloy steel, meets and exceeds ANSI/ASME standards. It has surface phosphating and heat treatment to improve material performance and make it more durable | Special Design: The wire gate of each O2 sensor removal tool is wide enough to pass through the wire without damaging it, which is both convenient and safe. And the square hole of this socket has a unique slotted design. These small slots have a good anti-slip effect, which can help to hold the ratchet firmly, making you more secure when using the tool | 2 Thread Chasers: The M12-1.25" and M18-1.5" thread chasers can be used with a 3/8" ratchet. This kind of tool is designed to re-tap threads, clean and repair damaged threads, remove rust and prevent future cross-threading | Wide Application: This O2 sensor remover set is suitable for removing, inspecting, replacing, and installing heated and non heated oxygen sensors and vacuum switches on most vehicles equipped with computer-controlled engines. As an important auto accessory, it is easy to use, convenient and practical, which can save your time and energy