Specifications ◆ Model Name: GE101T ◆ Finish (Color): C / Chrome ◆ Type: Tremolo Unit ◆ String Pitch: 11.3mm ◆ Contents: Tremolo unit body, arm, mounting screws x6, springs x5, spring holder, holder set screws x2, wrench, instruction manual This is the GOTOH GE101T, a 6-point support type synchronized tremolo unit. It's a reliable item, also used in high-end brand guitars. Made in Japan, it's a high-quality, premium part from GOTOH, a renowned brand! There's no other company in Japan that can produce products of this quality. The screw spacing for mounting is 11.2mm, a common metric standard. Many models can be swapped out directly. Please refer to the GOTOH official website for a dimensional chart to confirm compatibility. The nut and bridge (tremolo unit) are the first points where the vibrating strings transmit their vibrations. If you cut corners here, even a good wood body and neck won't matter. Please refer to the GOTOH official website for the diameters, sizes, and other specifications.