It is a magdrive utility pump 12b. I don't know much about it except that it was pulled off a system when I tore it down about a month ago, and that it was running perfectly when I took the system apart. I believe the system was about two years old. I do see some rust on a few of the screws, so you may want to replace or silicon over those if you are interested in it. If you're still interested in having it for $50, just text me anytime and we'll try to arrange somewhere to meet. 724-841-9626.