This set of 100 SCREW CAP M4*20 NI is suitable for Roland SC / SJ printers. This is the original Roland part (number 31049175AS).
 
Printer compatibility
Roland FP-740
Roland LEJ-640
Roland PNC-1860
Roland PNC-960
Roland SC-545ex
Roland SJ-1045ex
Roland SJ-645ex
Roland SJ-745ex
Roland SP-300
Roland SP-300v
Roland SP-540v
Roland VP-300
Roland VP-540
Roland VS-300
Roland VS-420
Roland VS-540
Roland VS-640
Roland XC-540
Roland XC-540mt
Roland XJ-540
Roland XJ-640
Roland XJ-740
Roland XR-640
Roland AJ-1000
Roland AJ-1000i
Roland FJ-540
Roland SJ-540
Roland SJ-640
Roland SJ-740
Roland LEC-300
Roland XF-640
Roland AJ-740
Roland AJ-740i
Roland SG-300
Roland SG-540
Roland VG-640
Roland VG-540
Roland GX-640