Roland Original BN-20/FH740/RE-640/SOLJET PRO4 RF-640 Printhead (DX7) -6701409010 To be used with: Roland VS-420/VS-640/VS-640i/VS-540i/VS-300i, Roland FH740, Roland BN-20, Roland XR-640, Roland SOLJET PRO4 XF-640, Roland RA-640, Roland RE-640, Roland RF-640, Remarks: Original Part no.: 6701409010