Main Sheet athwartships adjustment pulleys


While removing the dodger for re-sealing, I figured I would also re-seal the athwartships main sheet rail.  While disassembling the port and stbd pulleys, the stbd pulley crumbled apart as I removed it.  I guess 25 years of sun and weather is too much.  

So here is my question.  Does anyone have the specs on what this pulley is called?  I need to order new port and stbd pulleys. 

Thank you 

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