Siverline Egress Pivot Out Folding Handle

I need a replacement handle for this Silverline Pivot Out Egress Window. This handle snaps open to crank and folds in for storage.

I removed the broken handle from the shaft. The shat is not a hex rather a multi tooth .25 inside diameter and a .314 outside diameter.

Thanks for your help.

I was able to pull these photos off the paper tags still on the window.