Woodyah has reproduced the strange looking block plane mouth adjustment. You know the one that should never get lost. Well it does and we hate it too. This will just work at the time of installation. For some reason these parts are always missing and hard to find. They are manufactured with Stainless Steel and will fit perfect and outlast us.
If the one you're missing looks like this then it will work. I tested on Stanley, Record, Millers Falls and Craftsman. So buy with confidence. Supplies are limited.