One of our customers suggested the use of this extraction tool to eliminate the risk of thread damage during OEM filter adaptor removal. Rather than using a pipe wrench to grab sides of the adaptor, the tapered, left hand helix drives itself into the part when the extractor is turned counter-clockwise. As you can see only minimal marks are made on the interior surface.
This is a not readily available off the shelf item. You can purchase them at Mcmaster-Carr (item #57195A523). However, we will now include the extractor with the Bales Tech filter adaptor for an additional $7 for a total of $22, including shipping.