Adjustable Stoptail bridge - For use with PRS stoptail models. Includes two matching brass studs (with unplated brass threads). Includes intonation adjustment tool. (Stoptail bridge will fit SE-line, but studs will not). Note: Action height is adjustable by raising or lowering the studs that the bridge sits on. To adjust the mounting studs, first detune the instrument to relieve all possible string tension on the bridge. Next, using a quarter, perform the necessary height adjustments to the bridge. Then, retune the guitar. Bear in mind that the brass studs are a soft metal that could be prone to marring if adjustments are made too forcefully.