T1A Oxygen O2 or Lambda Sensor Thread Chaser M14, M18 Rethreading Tools, 12mm and 18mm, Chase Threads in O2 Sensor Mount or Bung, 2 Pieces, T1A- E1081 GREAT VALUE - Rust, dirt and metal particles can get stuck inside clean oxygen sensor thread holes. And thats an important part of keeping your vehicle running smoothly! Remove all of that crud and prepare your car or truck for new 02 sensors with the TruBuilt 1 Automotive Oxygen Sensor Thread Chaser set for better performance out of your vehicle. PROFESSIONAL GRADE CONSTRUCTION - The T1A Oxygen Sensor Thread Chaser was designed to survive years of use with a rust resistant finish. Made to work as a specialty automotive tool, just like those found in professional auto mechanics garages, you can count on years of reliable application even through heavy-duty jobs. HIGHEST-QUALITY PART - Engineered to outlast any other spark plug threading tools, the T1A Oxygen Sensor Thread Chaser set was made to stand tough - even through your worst jobs! Designed for everyday strength and durability in YOUR garage, or on the race track. COMPLETE SET - Each T1A Oxygen Sensor Thread Chaser set includes one 14mm and one 18mm oxygen sensor thread chaser. Designed for use with 3/4" hex socket or 3/8" square drive. Includes M12 x 1.5, M18 x 1.5 for cleaning and re-threading damaged oxygen sensor ports. BUY WITH CONFIDENCE - Rest assured with your purchase. Every T1A Oxygen Sensor Thread Chaser is backed by our industry leading 12-month warranty. If you are not 100% satisfied with your purchase, simply take advantage of the T1A No Questions Asked, 30-Day Money Back Guarantee!! As with all T1A tools, you are covered - TruBuilt to Last.