PRODUCT INTRODUCTION :
1 No grooves 520mm*(up 43mm+down 59mm)*6.8-7.0mm
2 Electric guitar,Acoustic Guitar:0Th Fret43mm,12Th Fret54mm,thickness6.5mm
3 Classical Guitar:0Th Fret52mm,12Th Fret62mm,thickness7mm,
4 Please tell me the data: chord length, number of F.
Physical photos: