http://www.yamaha.com/guitars/products/productdetail/0,,CNTID%253D545033%2526CTID%253D,00.html 它的Yamaha's Finger Clamp Quick Change Tremolo System NUT 實在是方便斃了 這裡有影片http://www.youtube.com/watch?v=bO8wQuuQxaI 不知道可不可以買來裝