"This is a terrific, traditional Floyd Rose¨ tremolo system. It comes complete with a locking nut and all pieces necessary for a complete installation". This kit contains the Floyd Rose® Special Tremolo bridge, locking nut, springs, pivot screws, and all hardware necessary for installation. The Floyd Rose® Tremolo System is used by more professionals throughout the world than any other. No copy can duplicate the patented double-locking design of the Floyd Rose® Tremolo System that allows you to lock your guitar in tune at the nut and at the bridge.