Specifications ◆Model Name: GE1966T ◆Finish (Color): CK / Cosmo Black ◆Type: Tremolo Unit ◆String Pitch: 10.8mm ◆Sustain Block: 33mm ◆Contents: Tremolo unit, all accessories (arm, lift screws, springs x4, spring holder, holder screws x2, screws, 3 types of wrenches), instruction manual The color is Cosmo Black! It's difficult to capture its characteristics in a photo, but It has a texture and light reflection that differs from other colors, like a muted color or tarnished silver, giving it a substantial coloring. This is GOTOH's Floyd-type tremolo unit, the "GE1996T". It's made by GOTOH, renowned for its high-quality, premium Japanese-made parts! GOTOH's unique adjustable torque arm, stud lock function, and above all, its unparalleled precision. The sustain block is a 33mm specification. For other details, please refer to the dimension chart on GOTOH's official website for confirmation. We also have lock nuts available that can be used with this unit, so please consider purchasing them together. The first point of contact for the vibration of a plucked string is the nut and the bridge (tremolo unit). If you cut corners here, even a body and neck made of excellent wood will be meaningless.