I bought it to replace the nut on the JS32 Jackson. You can definitely see and feel the difference in quality. However, even though the unit on the Jackson is supposed to be a Jackson branded FR Special, it's not the same size. They are both 43mm wide but the Schaller is longer toward the headstock and I'll need to sand the edge of the truss rod cover to get it to fit. For now I've got the screws and pads on the old nut. The screws do not strip and the pads are bigger and fit properly without twisting.