GOTOH NS510T-FE1 Chrome tremolo unit for guitars. Two-point support type. Steel saddles, 10.5mm pitch, 42mm block. Color: Chrome. Specifications ■ Guitar tremolo unit ■ Color: Chrome ■ Block: Zinc die-cast ■ Narrow spacing 10.5mm It was installed on a Fender AMERICAN PROFESSIONAL II Stratocaster. It was only played for a short time at home in a pet-free, non-smoking environment, and the bridge was returned to the original, so I think it's generally in good condition. Parts other than the bridge, such as anchors and springs, are unused. If you have a Fender guitar, it can be directly installed on Stratocasters with two-point tremolo bridges, such as the AMERICAN PROFESSIONAL II, player series, hybrid series, American Standard, and American Deluxe, so how about it if you are considering replacing your Stratocaster's bridge? The string spacing is 10.5mm, which is recommended to prevent strings from falling off.