Specifications ◆Model Name: GE101T ◆Finish (Color): GG / Gold ◆Type: Tremolo Unit ◆String Pitch: 11.3mm ◆Contents: Tremolo unit, arm, mounting screws x6, springs x5, spring holder, holder mounting screws x2, wrench, instruction manual This is the GOTOH 6-point synchronized tremolo unit, the "GE101T". It's a reliable item often found on high-end brand guitars. Manufactured by GOTOH, renowned for its high-quality, premium parts made in Japan!! There's no other place in Japan that can produce products of this quality. The screw spacing for mounting is 11.2mm, a standard metric size. Many models can be replaced directly. You can confirm the exact dimensions on GOTOH's official website. 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. Please refer to GOTOH's official website for details on the diameter and size of each part.