This BOLT,PENHOLDER is suitable for Roland CJ-400 printers. This is the original part (number 21815101 ).
 
Printer compatibility
Roland BN-20
Roland CJ-400
Roland CJ-500
Roland CJ-540
Roland CJ-60
Roland CJ-70
Roland CM-12
Roland CM-24
Roland CM-300
Roland CM-400
Roland CM-500
Roland CS-20
Roland CX-12
Roland CX-24
Roland CX-300
Roland CX-400
Roland CX-500
Roland DPX-4700LS
Roland EGX-30
Roland GX-300
Roland GX-400
Roland GX-500
Roland PC-50
Roland PC-60
Roland PC-600
Roland PNC-1000a
Roland PNC-1050
Roland PNC-1100
Roland PNC-1200
Roland PNC-1210
Roland PNC-1410
Roland SC-540
Roland SC-545ex
Roland GX-640