Music Box Winding Key Set - Three Keys Plus 1/2 Inch Extender Wondering what size key will be best for your music box project? Here is your solution. You will receive 3 keys plus a brass 1/2 inch extender. The Music Box movement is shown for clarification only and is not part of the listing. Fits all Sankyo, Yun Sheng, HuiLiDuo and most Swiss musical movements. The keys are quite standard and chances are they will fit. If not, they can be returned. A pleasant Amazon shopping experience is included. Gold and Silver Colored Keys