Jalousie window crank side rivets are broken

There us no identifying manufacturer. It is for an 8x24 window within a glass block window.

Please let me know if there is anything i can do to help with the part id..

Thank you.

Thank you. I missed this reply but just found it and ordered the part from you. Shipping and taxes nearly doubled the cost, but i'm hoping it will work and will be easier than grinding out the mortar to install a replacement window. I appreciate your quick reply.. your competitors who are only a few miles away from me did not respond. I also could have ordered it from Amazon with free shipping, but again, I appreciate your support and your company got my business.