| I don't know, but probably 5mm as that seems to be a pretty standard size for a lot of Japanese instruments. Or, go to a hardware store and get a set of metric allen keys. You'll find uses for most of them at some time and it's an inexpensive investment.
John
__________________
JTE
Spelling, grammar, and punctuation do matter, despite the threats of death by grease fire!
"Without space, music is just noise piling up on itself." TRK
Lakland Owners' Club # 248
| 
