Made in USA. This stainless steel fitting has many uses but essentially, it quickly and efficiently places a -6AN male end on 3/8" OD tubing. The fitting consists of a -6AN male body, a compression sleeve and a compression nut. We have used this compression fitting on stainless steel tubing in fuel systems and transmission cooler systems as well as return connections on power steering pumps that have a 3/8 OD tube return connection . Simply cut the bubble off of the steel return tube and install this compression fitting onto the tubing. Note: requires approx. 1" of straight tubing for proper assembly.