EWK 22mm 7/8 Inch Auto O2 Oxygen Sensor Removal Tool Flex Head Socket Ratchet Wrench A HARD NUT TO CRACK - Removing An Old Stuck Oxygen Sensor Can Be Tricky, Especially When Its Position Makes It Hard To Reach. Hence, You Need A Professional Tool To Do The Job. THE WORK IS NEVER LIMITED - Extended Contour Handle Enables The Wrench To Work Flexibly Around The Exhaust Where Is Hard To Reach. DESIGNED TO HOLD IT STEADILY - Swiveling Head With Dual-Sided 6-Point Configuration Grips The O2 Sensor Tightly And Allows Extra Leverage In Narrow Areas. WIRE GATE PREVENTS DAMAGES - The Slotted Design Makes The Tool Get To O2 Sensor From The Side Instead Of The Top, Keeping The Wires Harness Attached. No Damaging The Wire Or The Sensor.