Gotoh Floyd Rose bridge. Includes the arm, 3 springs, spring claw with screws, allen keys, mounting posts and inserts. A superb quality unit and probably the best Floyd on the market today. Cannot be used on a conventional Strat body without routing.The tremolo arm supplied is hollowed out at the base and threaded on the inside. This then screws into the trem unit like a normal vintage bridge but there is also a small grub screw on the bridge unit to tighten the arm and lock it in position. This is a well thought out design by Gotoh and means that the thread will not wear out over time.
Important measurements -Centre to centre of the two mounting posts - 74mmString pitch - 10.8mm