Brazilian company Plínio Fleck Group is said to have designed a new way for footwear manufacturers to attach the heel to the outer or midsole of a shoe when using pre-assembled heels.

The new system uses a specially designed button made of machined carbon steel, with an optional zinc finish, which has an inner thread that is then attached to the sole/midsole. This is said to provide better stability, a neater appearance and make turning shoes more comfortable than when using traditional nails.

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