Specifications ◆ Model Name: GE1966T ◆ Finish (Color): CK / Cosmo Black ◆ Type: Tremolo Unit ◆ String Pitch: 10.8mm ◆ Sustain Block: 36mm ◆ Contents: Tremolo unit, complete accessories (arm, lift-up bolt, springs x4, spring holder, holder set screws x2, screws, wrenches x3 types), instruction manual The color is Cosmo Black! It's difficult to capture its characteristics in a photo, but it has a subdued, smoky silver color, and the texture and light reflection are different from other colors, creating a heavy color scheme. This is the GOTOH Floyd Rose type tremolo unit, "GE1996T". Made in Japan, it's a high-quality, high-end part from GOTOH, known for its excellence! It features GOTOH's unique torque-adjustable arm, stud lock function, and, above all, its unparalleled precision. The sustain block is 36mm. For other details, please refer to the GOTOH official website for the dimensional chart, which is the most reliable source. We are also selling locking nuts that can be used with this unit. Please consider purchasing them together. The nut and bridge (tremolo unit) are where the vibrations of the plucked strings are first transmitted. If you cut corners here, even a body and neck made of good wood won't matter.