Lisle 12230 Oxygen Sensor Thread Chaser<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cleans Threads in Oxygen Sensor Holes</li><li>Use with 3/4" hex socket or 3/8" square drive; Size: M18x1.5</li><li>Also works on M18x1.5 spark plug threads; important: Use anti-seize</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31f82mZ-BjL.jpg" noproxy>