This is a beautiful replica of the traditional vintage tremolo, but with a modern twist. It features contemporary 10.8 mm spacing, while using the original 2 7/32 inch 6 screw mounting hole locations. Includes: Kluson embossed stamped steel saddles, and a machined solid steel sustain block. Comes complete with arm, screws, claw and springs. It is a direct spec replacement for part # 099-2049-000 in different plating/finish and modern 2 1/8 inch (54mm) E to E string spacing.