This set of 20 saddle set locking wires LES-1010 is suitable for Roland printers. This is the original Roland part (number 31409702).
 
Printer compatibility
Roland AJ-1000
Roland AJ-1000i
Roland AJ-740
Roland AJ-740i
Roland CJ-540
Roland FJ-540
Roland FLJ-300
Roland FP-740
Roland RS-540
Roland RS-640
Roland RX-50
Roland SC-540
Roland SC-545ex
Roland SJ-1000
Roland SJ-1045ex
Roland SJ-540
Roland SJ-640