Chinatera Silver Tremolo Vibrato Bridge Tailpiece Hollow body Archtop for Les Paul Guitar The Vibrato Bridge was the first successful design of what is now called a whammy bar or tremolo arm, although vibrato is the technically correct term for the musical effect it produces. In standard usage, tremolo is a rapid fluctuation of the volume of a note, while vibrato is a fluctuation in pitch. The origin of this nonstandard usage of the term by electric guitarists is attributed to Leo Fender, who also used the term vibrato to refer to what is really a tremolo effect. Silver Finished as the photo shown Color: Silver Condition: New, Never Be Used Includes:1x Bridge,7x Mounting screws