Specifications ◆ Model Name: GE1966T ◆ Finish (Color): B / Black ◆ Type: Tremolo Unit ◆ String Pitch: 10.8mm ◆ Sustain Block: 40mm ◆ Contents: Tremolo unit body, all accessories (arm, lift-up bolt, springs x4, spring holder, holder set screws x2, screws, wrenches x3 types), instruction manual This is the GOTOH Floyd Rose-type tremolo unit, the "GE1996T". Made in Japan, this high-quality, premium part is from GOTOH, a company renowned for its excellence! It features GOTOH's unique arm with adjustable torque, stud lock function, and, above all, unparalleled precision. The sustain block is the standard 40mm specification. For other details, please refer to the dimensional chart on the official GOTOH website for confirmation. We are also selling locking nuts that can be combined with this unit. Please consider purchasing them together. The nut and bridge (tremolo unit) are where the vibrations of the strings are first transmitted. If you cut corners here, even a body and neck made of good wood will be meaningless.