Products 06/30/2020 Luxury buttons for SG510 Button Options for SG510 Machine Heads <Nature Mode Series>High quality wood and exceptional processing technology make it possible to manufacture GOTOH Nature Mode. [GOTOH Website] https://g-gotoh.com/productList/sg510-series/?lang=en Also, the following beautiful new buttons have been added to SG510 Series Common Button options. CS5 VL5 WL5 FS5 colors in both large and small are available.