What do you use Farosh Fang for?

What do you use Farosh Fang for? Its primary use is to enhance the Cap of the Wild, but they can also be sold to shop-vendors all over Hyrule for 250 Rupees each, or, alternatively, can be traded to Kilton in return for 110 Mon.

Its primary use is to enhance the Cap of the Wild, but they can also be sold to shop-vendors all over Hyrule for 250 Rupees each, or, alternatively, can be traded to Kilton in return for 110 Mon.
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