Advanced Music Products (AMP) is a division of Advanced Plating Inc (API). Engineering and manufacturing guitar parts for the titans of the industry. Hardware that's been made in the USA for over 60 years. OEM fit, finish and function. Trust the brand your favorite brand's trust. Individual sideways vibrola tremolo. Includes three mounting screws, two springs and hardware. 6.375" L x 4.375" W x .75" H. 12.1 oz. Brass. Available in: Black Chrome 1514BC Black Nickel 1514PC Chrome 1514C Gold 1514G Nickel 1514N ** MATCHING HARDWARE ** End Pin Screws Gold 1850G (2-Pack) Nickel 1850N (2-Pack)