I've tried to find some info on this bridge online, and am not having much luck. The closest I've found seems to be hipshot, so I'm guessing this is an older discontinued model. I've been switching all of the gold hardware out for black, and this is the only piece I haven't changed. I'm hoping to grab one in the next couple of months. I picked up a new set of strings to use untill then, and wanted to do some basic intonation as a couple of strings have become a little out of tune with themselves. I've had this bass set up professionally a few times, and haven't ever really messed around with a bridge like this with no screws to move the saddles. I've been tinkering around with it a little, and am having a hard time figuring it out. I can't seem to get the pitch of the strings to move sharp of flat at all. Anyone have experience with these?