[High Quality Material] Made of high-strength chromium vanadium steel. Please rest assured that our products are sturdy enough to install and remove oxygen sensors. The outer layer is protected from oxidation and rust through phosphating and electroplating, extending its service life. | [Package Includes] 1 piece of 3/8 "Dr. ultra deep drawing knife socket (3-1/8" long), 1 piece of 3/8 "Dr. thin crowbar socket wrench (1-1/4" long), 1 piece of 1/2 "Dr. offset crowbar socket wrench (1-15/16" long), and 1 piece of M18 x 1.5mm and 1 piece of M12 x 1.25mm threaded groove with 3/8 "driver for cleaning and repairing damaged threads. | [Features] Special side cut design allows for easy access to the oxygen sensor from any part and prevents damage to the wires. | [Convenient Storage] The disassembly tool for the automotive oxygen sensor socket wrench is equipped with a storage box, which can protect the tool well during transportation and allow you to keep the tool well after use. | [Applicable] The oxygen sensor sleeve kit is perfect for removing, inspecting, replacing, and installing heated and non heated oxygen sensors and vacuum switches on most vehicles equipped with computer-controlled engines.