tremolo Wilkinson type, pitch 10,8 mm, 6 pivot points, gold Improved Strat tuning stability, sustain and reliability! The baseplate holes are elongated so the screws won&;#039;t bind, for smooth, accurate pitch return. For tuning stability, the string mounting holes are staggered in the steel block for more consistent string angle over the adjustable locking bent-steel saddles. &;lt;br&;gt;&;lt;br&;gt;54 mm (2-1/8&;quot;) string spacing. &;lt;br&;gt;&;lt;br&;gt;Included with the set are: springs, spring claw, arm with white plastic knob, mounting screws, saddle adjustment screws and allen wrenches. &;lt;br&;gt;&;lt;br&;gt;