1. Materials These sockets and wrenches are forged from highquality steel with high strength. The surface adopts black oxide which is durable. 2. Package Includes 1 piece of 3/8 'Dr. ultra deep puller set (31/8' long), 1 piece of 3/8 'Dr. fine pry bar socket wrench (11/4' long), 1 piece of 1/2 'Dr. offset pry bar socket pliers (115/16' long), and 1 piece of M18 x 1.5mm and 1 piece of M12 x 1.25mm threaded groove with 3/8 'screwdriver for cleaning and repairing damaged threads. 3. Design Three different types of sockets cover different positions of the oxygen sensor, and the special side cut design allows for easy access to the oxygen sensor from any part and prevents damage to the wires. 4. 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 also keep the tool well after use.