Features and Benefits: Used to remove and install oxygen sensors on most domestic and some imported vehicles Features cutaway slot to provide clearance for wire harness Manufactured from heat-treated alloy steel for wear in professional rugged environments Works with 3/8 square drive or 1 wrench These K Tool oxygen sensor sockets are made of steel and have a black oxide finish. They have a 3/8 in. drive and a side cutout-style socket. Look no further than K Tool for all of your oxygen sensor sockets. Use to remove and install oxygen sensors on most domestic and some imported vehicles. Features cutaway slot to provide clearance for wire harness. Manufactured from heat-treated alloy steel for wear in professional rugged environments. Works with 3/8 in. square drive or 1 in. wrench.