• M12 x 1.50 - 3.95" OAL Cleaning & Restoration Thread Chaser Tool. What's in the box: 1x M12 x 1.50 - 3.95" OAL Cleaning & Restoration Thread Chaser Tool. Product: Thread Cleaning Chaser. • Universal Thread Restoration: Engineered for versatility, our thread chasers can be used on a wide range of threaded fasteners, making them an ideal choice for automotive, machinery, and DIY projects.