woodruff key (A833)

ChargerST said

I wonder where this key comes from.. reverse shaft (didn't take out mine)? It was in the same bag I had all small parts stored.

What puzzles me is that Brewers shows the same keys for cluster pin and reverse shaft: Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

View attachment 1715888666

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the keys are the same for both reverse and counter shaft. The key you have is twice the thickness of the correct key if you need the the thickness I can mic one from the shop tomorrow evening. The ones brewers sell are the correct ones.
Also the key you have pictured did not come from anywhere in or on an A833 trans.