Yeah, looks like Price Pfister. when those don't come off I just grab with some pliers and rock the back end of the handle up and down until I snap it off at the broach. stems are pretty common and easy to replace. I use the same puller. don't use the small block that off to the side. black pin goes into the screw hole and should bottom out in the stem before it gets to the threads on the center shaft of the puller.