Yep, Yam paints some of their stainless props black. There must be just enough iron in the alloy to allow the mag to stick. If it were an Alum prop there is no way the mag would attach. Both those yams should share the same propshaft, but thats a big guess on my part. Look in an overtons catalog or any website selling props and see if they list the same part number for both engines?
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