Specifications ◆ Model Name: GE1966T ◆ Finish (Color): B / Black ◆ Type: Tremolo Unit ◆ String Pitch: 10.8mm ◆ Sustain Block: 40mm ◆ Contents: Tremolo unit body, complete accessories (arm, lift 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 made by GOTOH, a company renowned for its excellence! It features GOTOH's unique arm with adjustable torque, stud lock function, and, above all, its unparalleled precision. The sustain block is the standard 40mm specification. For other details, please refer to the GOTOH official website for the dimensional chart, which is the most reliable source. We also have locking nuts that can be combined with this unit, so please consider purchasing them together. The nut and bridge (tremolo unit) are where the vibrations of the strings first transmit. If you cut corners here, even a body and neck made of good wood will be meaningless.