Complete Oxygen Sensor Socket Kit – Includes three unique sockets designed to remove and install oxygen sensors and vacuum switches in tight or awkward spaces. Shallow 7/8" Offset Socket – Allows easier turning in confined engine areas while accommodating wiring and vacuum lines. Deep Straight & Offset Sockets – Reach sensors that are inaccessible to standard sockets; deep socket also works on common vacuum switches. Convenient Wiring Slot – Each socket features a slot to let sensor wires or vacuum nipples extend outside the socket wall for hassle-free use. Organized Storage Case – Keeps all three sockets neatly stored and easy to transport.2