Are these Schaller tuners?

[Steve_Karl]

These are on my G&L F-100 II
Are they considered "vintage" Schallers?

My reason for asking is I'd like to know the hole size because I'm thinking of replacing them with
Schaller mini locking.

Thanks!

 

[AutoBat]

Yes they are, more specifically they're Schaller model ST6 500.
They're a replacement for the Kluson vintage press-fit type tuners (i.e. not the bigger staggered Schaller ream)

 

[Steve_Karl]

Thanks.

I can probably find the hole size from that as then know if I have any reaming to do.

 

[Steve_Karl]

I think I found them.

9.8 mm
http://guitar-machine-heads.com/hp14419/ST6NIL-501.htm

9.8 mm = (aprox) 25/64
http://www.warmoth.com/Guitar/Necks/TunerHolesPop.aspx