Jewel Belt drive - I have lost the woodruff key from my Jesel belt drive, I know it's 0.125" wide, not sure on other dimension, I thought it may of been 7/16" dia, but doesn't seem to be a common size.

Anyone know the size or where I might source one. Jegs list one,but doesn't give sizes, also, not available to ship till the end of the month.

Thanks,