Unfortunately, I had to return this Tremolo because it was not standardized correctly. I have purchased GOTOH products before and I can confirm that GOTOH products are perfectly made (high quality Japanese products) as is this Tremolo but the 6 holes for connecting to the guitar body on this Tremolo have a different base plate grid than the (declared) Narrow Spacing standard. The Saddle's set dimension & strings spacing on this Tremolo are correct according to the Narrow Spacing standard but not these 6 holes on the base plate. I planned to install this Tremolo on my Standard Fender Stratocaster (Narrow Spacing) and I am very sorry that I could not use it because it is an excellent product and at a very good price.
On this guitar of mine I previously had an original Fender Vintage, 6-Hole Narrow Strat Tremolo installed and later a Babicz FCH Z, 6-Hole Narrow Tremolo and both were correctly dimensioned. FYI: Narrow Bridge Spacing is 52.5mm and Wide Bridge Spacing is 56.0mm. If someone wants to buy & install this Tremolo on their Fender Stratocaster or other brand with 6 Tremolo holes, I advise them to first check which exact base raster standard they have on their guitar - Narrow or Wide?