How can something so good be so cheap? The Tune-o-matic Guitar Bridge Roller Saddle by BQLZR is a high-value roller bridge. I have been nothing but pleased with this bridge. The only complaint I have is due to my fault. If you try to raise the bridge height with any amount of string tension, you need to use a bridge jack. I snapped the threaded adjustors when trying to raise the bridge with a pair of pliers.
The bridge has piles of adjustments that allow you to get the correct intonation and string height.
This bridge is sold under a few different names on Amazon. They all seem to be identical. I bought this one as a drop-in replacement to XXX that I broke in the story above. I am 100% sure these two bridges came from the same casting/production facility.