7/8" 22mm Low Profile Oxygen Sensor Offset Socket O2 Puller and Removal Socket, 3/8 drive T1A-E1019-1 MAXIMUM TORQUE: The unique off set design of the T1A Oxygen Sensor Wrench delivers maximum torque with maximum convenience! Made to increase torque on hard-to-remove O2 sensors and allows you to access tough spots, easily! UNIVERSAL FIT: 7/8 inch (22 millimeter) hex fits almost all oxygen sensors - 3/8" drive for ratchets. LOW PROFILE: Standard 6 point with low profile and slotted design to enable removal of 02 sensors while keeping the harness attached. HEAVY-DUTY: The T1A Oxygen Sensor Wrench is a heavy-duty tool made from only high performance chrome molybdenum and solid cast steel construction. 100% SATISFACTION GUARANTEE: As with all of our tools, you are covered. Not satisfied? Return it for a full refund - "TruBuilt to Last." Standard 6 point with low profile and slotted design Made from only high performance chrome molybdenum and solid cast steel construction 7/8&#034; (22mm) hex fits almost all oxygen sensors - 3/8&#034; drive for ratchets