Fits IBANEZ EDGE ZERO II  tremolo systems.
This arm will fit these IBANEZ Guitars with the above tremolo system:

 

JEM 77P

KIKO10P Kiko Loureiro

RG1XXV

RG350DXZ

RG350EXZ

RG350MPZ

RG350MZ

RG370DXZ

RG420PB

RG420FBZ

RG450DX
RG450M

RG470AHZ

RG470FM
RG470MHZ

RG827QMZ

RG827Z

RG870QMZ

RG870Z

RG920MQMZ

RG920QMZ

RG920Z

RG927QMZ

RG927Z

RG7320Z
RG7420

RGIR20E

 

RGA42E

RGA42TZE

RGA72TQMZ

RGA72TQMZE

 

RGD320Z

RGD420Z

RGD7320Z

S520

S670QM

S770PB