Musiclily Double Locking Tremolo Bridge System Set For Electric Guitar Floyd Rose Parts, Black Fits for electric guitar,locking tremolo, with Locking nut String Spacing 2-1/8" (54mm) ;Post Spacing 2-15/16" (74.6mm) ;Nut width 1-5/8"(42mm); Mounting Screws Spacing 2-1/16 (53mm) Material: zinc alloy; Color:Black Includes claw, springs, arm, mounting screws, and wrenches Package Including:1x Locking Tremolo Bridge Set