The first, the only, the Original double-locking tremolo system used by more professionals than any other! The Floyd Rose Original is precision-made, engineered to exacting specifications using high-quality hardened steel and a nickel-plated brass sustain block. The tremolo kit contains the bridge, springs & claw, mounting studs, and all hardware necessary for installation. Locking nut sold separately here.The Original 6-string tremolo has a 10" radius out-of-the-box. A factory-installed shim under the center saddles can be removed, bringing the radius to a flatter 12". To match different radii, the individual saddles can be shimmed with either saddle shims (available on the web) or using copper or aluminum tape.USA Series Update: All Original Tremolos in chrome are now part of the USA Series. Black and gold will begin shipping from the USA in April, with nickel and black nickel following in May. In the meantime, MIG stock remains in satin chrome, satin gold, and satin pearl.For tremolo dimensions, please see the PDF here.Routing diagrams: Inches | MMSpecificationsBase PlateHardened steelSaddlesCNC-machined hardened steelTremolo block37mm nickel-plated brassTremolo armNew-style (screw-on cap) | Stainless steelString RetainerHardened steelScrewsHardened steelSpringsCoiled steelBridge Radius10" with preinstalled shim / 12" without