New! Made in Japan, High Quality, Genuine Gotoh Tremolo Unit Specifications ◆ Model Name: GE101TS ◆ Finish (Color): GG / Gold ◆ Type: Tremolo Unit ◆ String Pitch: 11.3mm ◆ Contents: Tremolo body, arm, mounting screws x 6, springs x 5, spring holder, holder set screws x 2, wrench, instruction manual This is the GOTOH six-point synchronized tremolo unit, the "GE101TS". This is a reliable item, also used in high-end guitars. Made in Japan, high quality, GOTOH is renowned for its high-end parts. There is no other company in Japan that can produce products of higher quality. The difference between the "GE101TS" and the "GE101T" is that the inertial block (sustain block) is made of steel/iron, resulting in a more vintage-oriented sound. Also, as a minor change, the saddle screws are US standard, and there is a subtle difference in the hole for inserting the arm: "GE101T: 5Φ" and "GE101TS: 4.8Φ". The screw spacing for mounting is 11.2mm, which is the general metric standard. Many models can be replaced directly. Please check the GOTOH official website for the dimensional drawings to be sure. 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. Please refer to the GOTOH official website for the diameters and sizes of each part.