Roland XC-540 P-ROLLER TD16S4 TYPE2-21565102
To be used with: 
Roland CJ-540 / SC-540 / SC-545 EX / SP-300 / SP-300i / SP-300V / SP-540 / SP-540i / SP-540V / VP-300 /VP-300I / VP-540 / VP-540I / XC-540
Roland FH-740 / RA-640 / RE-640 / VS-640 / VS-540 / VS-420 / VS-300 / VS-300i / VS-540i / VS-640i
Remarks: Original
 
The Pinch Roller has an inner diameter of 4mm and an outer diameter of 15.5mm.
It is recommended that you replace the 2 pinch roller together to ensure the pressure on both sides are same.