This is a Schaller Tremolo (S-FRT-II). The "S-FRT-II" is the Schaller tremolo, known as the OEM for Floyd Rose. Although compatibility is sacrificed due to the use of different string lock screws compared to the Floyd Rose Original, it has the advantage of being compact and fitting very well in guitars mounted with a recessed tremolo, as the lock screws don't protrude as much. Also, the market price is not as high as the Original, and it is said that the base plate is thicker than the Original and the sound is better. Therefore, it is a highly recommended tremolo that balances price and precision, especially now that the Original has become more expensive and harder to obtain. [Included Items] ・Bridge unit body ・Arm ・Nut set (with screws. Can be attached on either side) ・Springs, anchors ・String retainer (with screws) ・Studs ・2 wrenches ※ The nut will be the one indicated in the title (either R2/R3). ※ The tremolo block length is 37mm. We are directly importing new, unopened boxed items from the Schaller headquarters. Recommended for replacing from lower-priced bridges such as the Floyd Rose Special. Please note that this Schaller, like the Floyd Rose Original, is running low on stock worldwide, so we recommend considering your purchase as soon as possible. *SCHALLER-TREM-GD37R3