Schaller Lockmeister 6 Trem 32 Block BC, FR-Style Locking Tremolo for Electric Guitar, C45 Steel base plate, Forged and hardened in Germany for improved sound and sustain as well as outstanding tremolo work and intonation, Standard FR tremolo dimensions, Total string spacing: 54 mm, Single string spacing: 10.8 mm, String radius: 12"" (305 mm), Block dimensions (H x W): 32 x 50 mm, Dimensions (L x W): 91.7 x 76 mm, Total hole / bolt spacing: 74.3 mm, Schaller No. 13010432.03, Colour: Black Chrome, Made in Germany@+*Scope of delivery:*@+@+, 1 Locking groove (R3) with 2 pairs of different fastening screws, 1 String retainer with 2 fastening screws 2.2 x 16 mm, 1 Spring retaining plate with 2 fastening screws 4.2 x 45 mm and 3 tremolo springs, 2 Height adjustment screws M7x0.5 with 2 drive-in nuts, outer diameter 10mm, 3 Allen keys (2.0 / 2.5 / 3.0 mm)